The type of expression of each functional structural gene for the three bacterial strains is as follows:
Strain trpC trpB trpA
Wild type On On On
trpR- Off On On
trpO- On On On
Wild type: The trpR gene and trpO operator are both functional, so the trp operon is regulated by the presence of tryptophan. In the presence of high levels of tryptophan, the trp repressor will bind to the trpO operator and repress the expression of the structural tryptophan synthetase genes. In the absence of tryptophan, the trp repressor will not be able to bind to the trpO operator, and the structural tryptophan synthetase genes will be expressed.
trpR-: The trpR gene is mutated, so the trp repressor protein is not produced. This means that the trp operon is not regulated by the presence of tryptophan, and the structural tryptophan synthetase genes will always be expressed.
trpO-: The trpO operator is mutated, so the trp repressor protein cannot bind to it. This means that the trp operon is not regulated by the presence of tryptophan, and the structural tryptophan synthetase genes will always be expressed.
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The trp operon in E. coli is a repressible operon. It is regulated through a negative feedback mechanism where the accumulation of tryptophan, the end product, leads to the repression of its further production.
Explanation:In Escherichia coli (E. coli), the tryptophan operon, known as the trp operon, is a fundamental mechanism of gene regulation. It encodes structural genes, including trpC, trpB, and trpA, which contribute to the tryptophan synthetase protein complex. The expression of these genes is regulated by a repressor protein encoded by the trpR gene. When levels of tryptophan are high, tryptophan molecules bind to the repressor, allowing it to recognize and attach to the operator region, called trpO, and subsequently, inhibiting the expression of the structural genes. However, in the absence of tryptophan, the repressor does not bind to the operator region, allowing for gene expression to occur.
This type of operon system is termed a repressible operon, as the regulatory gene produces a repressor that can bind to the operator and prevent transcription of the structural genes. Thus, trp operon regulation is dependent on the negative feedback mechanism, where an abundance of the end product (tryptophan) leads to the repression of further production.
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Har Gobind Khorana and his colleagues performed numerous experiments translating synthetic mRNAs. In one experiment, an mRNA molecule with a repeating UG dinucleotide sequence was assembled and translated.
Write the sequence of this mRNA. Select all that apply.
a) 3'-GUGUGUGUGUGUGUGU...-5'
b) 5'-GUGUGUGUGUGUGUGU...-3'
c) 3'-UGUGUGUGUGUGUGUG...-5'
d) 5'-UGUGUGUGUGUGUGUG...-3'
Answer:
d) 5'-UGUGUGUGUGUGUGUG...-3'
Explanation:
A UG dinucleotide is when UG is repeated.
mRNAs are transcribed and translated as a 5' to 3' molecule. Therefore, the direction should be 5' - 3'.
For the mRNA to be in frame, it must start with UG. The only option that runs 5' - 3' and is in frame for a UG dinucleotide is d.
Har Gobind Khorana's experiment used a synthetic mRNA molecule with a repeating UG dinucleotide sequence. The correct sequence reflecting the direction of transcription is d) 5'-UGUGUGUGUGUGUGUG...
Explanation:The question refers to an experiment conducted by Har Gobind Khorana and his colleagues, in which a synthetic mRNA molecule with a repeating UG dinucleotide sequence was assembled and translated. mRNA sequences are written from the 5' end to the 3' end, reflecting the direction of transcription. So, the repeating sequence of this mRNA molecule is d) 5'-UGUGUGUGUGUGUGUG...
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13.Certain species of whiptail lizards have only female individuals and no males. These lizards
reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?
A new population can be established by a single individual in a relatively short period of
time.
B.All the members of a population are genetically very similar and less able to survive
environmental changes.
C.They are smaller than lizards that reproduce sexually.
D.They are more likely to develop a variety of tail lengths.
Answer:
The answer is B, All the members of a population are genetically very similar and less able to survive environmental changes.
Explanation:
The study of a living being is called biology.
The Correct Answer is B.
The production of new offspring from the single parent is called asexual reproduction.
The factor affecting asexual reproduction is that it is made from a single parent and there is not an exchange of genes which leads to the form offspring totally similar to the parent and having less chance to evolve in the environment.
Hence, the correct answer is B that is All the members of a population are genetically very similar and less able to survive
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Primary succession occurs A. After a disturbance that removes an entire community leaving a sterile environment B. After a disturbance that disrupts a community but leaves a seed bank in the soil C. Right before the secondary succession D. After a severe drought in southwest US which kills all trees and crops
Answer:
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited.
Suppose a researcher introduces a mutation into the glucosidase domain of the mammalian glycogen debranching enzyme. The mutation inhibits the activity of the glucosidase but does not affect the other functions of the enzyme. The researcher then introduces the mutated enzyme into mammalian cells that do not express wild type glycogen debranching enzyme. Predict the effect of the mutation on glycogen metabolism. a. linear glycogen chains with minimal branching b. glycogen molecules with branches containing five or more glucose residues c. glycogen molecules with branches containing a single glucose residue d. glycogen molecules with branches containing four glucose residues
Answer:
c. glycogen molecules with branches containing a single glucose residue
Explanation:
The mutation inhibits the activity of the glucosidase but does not affect the other functions of the enzyme. The researcher then introduces the mutated enzyme into mammalian cells that do not express wild type glycogen debranching enzyme because glycogen molecules with branches containing a single glucose residue (single glucose molecule linked by alpha 1,6 linkage due to mutation in glucosidase activity of debranching enzyme).
Final answer:
Option c is the correct answer. The mutation in the glucosidase domain of the glycogen debranching enzyme leads to glycogen molecules with branches containing a single glucose residue, due to the inability to remove these residues at the branch points.
Explanation:
The question is relating to the effects of a mutation in the glucosidase domain of a mammalian glycogen debranching enzyme, specifically how this mutation affects glycogen metabolism when the mutated enzyme is introduced into mammalian cells. The glycogen debranching enzyme plays a critical role in glycogen breakdown, mainly by transferring a trisaccharide from an alpha-1,6 branch onto an adjacent alpha-1,4 branch and then hydrolyzing the remaining single glucose residue at the alpha-1,6 branch point. Since the mutation inhibits the glucosidase activity but does not affect other functions, this means the enzyme cannot properly process the remaining single glucose at the branch point.
The correct option is (c) glycogen molecules with branches containing a single glucose residue. This is because, with the inhibition of glucosidase activity, the debranching enzyme can no longer remove the single glucose residues at the branch points, leading to the accumulation of these residues in the glycogen structure.
Enzymes work in biological systems by _________. View Available Hint(s) Enzymes work in biological systems by _________. decreasing the equilibrium constant lowering the activation energy of a reaction increasing the equilibrium constant increasing the activation energy of a reaction g
The complete sentence should be, 'Enzymes work in biological systems by lowering the activation energy of a reaction.'
This is essential because the activation energy is the minimum amount of energy needed for a chemical reaction to occur. By reducing this energy threshold, enzymes make it easier for reactions to happen, thus speeding up biochemical processes.For example, without enzymes, many metabolic reactions in our bodies would proceed too slowly to sustain life. Enzymes achieve this by binding to the reactants and stabilizing the transition state, which ultimately reduces the energy needed to reach it.what genotype does a person with AB have
Answer:
if talking about AB blood type then a person with blood type AB has the genotype AB.
Explanation:
Which of the statements are true of both first- and second-division nondisjunction? Select all that apply. Sister chromatids fail to separate. Half of the gametes produced are wild-type, whereas half are mutated. Gametes are produced with extra chromosomes. Homologous chromosomes fail to separate. Gametes are produced with missing chromosomes.
Answer:
Gametes are produced with extra chromosomes. Gametes are produced with missing chromosomes.Explanation:
Non-disjunction is a genetic phenomenon that results in a failure in the segregation of sister chromatids. Non-disjunction can be classified as first or second division, however both result in genetic anomalies, because both cause excessive gamete production, or failure in gamete production, in addition to causing cells to be created with fewer chromosomes than they should It has.
For this reason, we can consider that the correct answer to your question is:
Gametes are produced with extra chromosomes. Gametes are produced with missing chromosomes.The statements "gametes are produced with extra chromosomes" and "gametes are produced with missing chromosomes" are TRUE.
Meiosis is a cell division by which a parent cell divides twice and duplicates its genetic material to produce four daughter cells (gametes) having half of the genetic material.These successive rounds of cell division are called Meiosis I and Meiosis II.Non-disjunction refers to either the faulty separation of either homo-logous chromosomes or sister chromatids during Meiosis I or Meiosis II.In conclusion, the statements "gametes are produced with extra chromosomes" and "gametes are produced with missing chromosomes" are TRUE.
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Complete the following statement. Cellulose and amylose are ________. 1,4' linked polymers of D-glucose which differ in the stereochemistry of this linkage 1,6' linked polymers of D-glucose which differ in the stereochemistry of this linkage polymers of D-glucose which are structurally isomeric polymers of D-galactose which are structurally isomeric synonyms for the only polymeric form of D-glucose
Answer:
The correct answer is: 1,4' linked polymers of D-glucose which differ in the stereochemistry of this linkage.
Explanation:
Cellulose and amylose are both polysaccharides and polymers of glucose (which means that they are composed of glucose molecules). While cellulose is mostly found on the cell wall of plants and algae, amylose (along with amylopectin) form the main carbohydrate in humans' diets: starch.
While the glucose molecules in amylose are linked by α(1-4) glycosidic bonds, the glucose molecules in cellulose have β(1-4) glycosidic bonds. This particularity is what makes amylose and cellulose compounds differ from one another.
Answer:
1,4' linked polymers of D-glucose which differ in the stereochemistry of this linkage
Explanation:
Cellulose and amylose are polymers of glucose. Amylose's monomeric units are linked by alpha α-1,-4-glycosidic bonds and cellulose monomeric units are joined by β 1-4 glycosidic bonds. These two substances are carbonhydrates; polysaccharides in particular: polymeric carbohydrates composed of monosaccharide units linked toghether by glcosidic bonds.
Choose a plant tissue. Write an explanation of
how that tissue's structure relates to its function.
Be specific and detailed.
Answer:
Dermal Tissue
Dermal Tissue: a group of cells that make up the outermost layer of a plant and function as protection
Location
Outer layer of plant
Function
Protection
Dermal Tissue-Important Structures
Cuticle
Protects from injury
Prevents water loss
Guard cells
Controls gas exchange
Prevents water loss
Explanation:
trust
Answer:
Answer:
Dermal Tissue
Dermal Tissue: a group of cells that make up the outermost layer of a plant and function as protection
Location
Outer layer of plant
Function
Protection
Dermal Tissue-Important Structures
Cuticle
Protects from injury
Prevents water loss
Guard cells
Controls gas exchange
Prevents water loss
Explanation:uoij0
What factors, other than exercise, would increase the heartbeat rate?
Answer:
Emotions and anxiety can raise your heart rate, Body Temperature: If you become too hot or too cold your body senses a thermal stress load, The terrain, Wind, Dehydration, Diminishing glycogen stores — your muscles primary fuel source.
Explanation:
Experiments by Charles Yanofsky in the 1950s and 1960s helped characterize the nature of tryptophan synthesis in E.coli. In one of Yanofsky's experiments, he identified glycine (gly) as the wild-type amino acid in position 211 of tryptophan synthetase, the product of the trpA gene. He identified two independent missense mutants with defective tryptophan synthetase at these positions that resulted from base-pair substitutions. One mutant encoded arginine (arg) and another encoded glutamic acid (glu). At position 235, wild-type tryptophan synthetase contains serine (ser), but a base-pair substitution mutant encodes leucine (leu). At position 243, the wild-type polypeptide contains glutamine, and a base-pair substitution mutant encodes a stop codon.
The most likely wild-type codon for position 235 is AGT/C. Identify the most likely wild-type codon(s) for position 235 and 243.
Answer:
Charles yanofsky established gene sequence and protein sequences are collinear in bacteria. He explains changes in DNA sequence can capable to produce changes in protein sequence at corresponding positions of bacteria.
The most likely wild-type codon for position 235 is AGT/C
The most likely wild-type codon(s) for position 211 is GGA/G
The most likely wild-type codon(s) for position 235 is UCA/G
The most likely wild-type codon(s) for position 243 is CAA/G
What are the medical uses of Interferon beta-1a?
Answer:
nterferon beta-1a is used to treat relapsing multiple sclerosis (MS) in adults. interferon beta-1a will not cure MS, it will only decrease the frequency of relapse symptoms. Interferon beta-1a may also be used for purposes not listed in this medication guide.
How does earths magnetic field provide evidence for seafloor spreading
Answer: A ;)
Explanation: DON'T WORRY BOUT IT SWEET HEART
The Earth's magnetic field provides the evidence for seafloor spreading by creating a pattern of alternating rock stripes on both sides of a mid-ocean ridge. Thus, the correct option is A.
What is Seafloor spreading?
Seafloor spreading is a process which occurs at the mid-ocean ridges where the new oceanic crust is formed by the volcanic activity and afterwards this gradually moves away from the ridge of the ocean.
During a seafloor spreading, a rift in the ocean can spill out the partially melted subducted rock present in the ocean. However, when the magma cools down, there is a change in the magnetic variation of rocks which were formed by the series of volcano that has occurred underwater.
The variation of rocks shows younger rocks closer to the mid-oceanic ridge in the process.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
How does Earth’s magnetic field provide evidence for seafloor spreading?
a. It creates a pattern of alternating rock stripes on both sides of a mid-ocean ridge.
b. It allows scientists to determine the age of drilling samples.
c. It causes magma to harden quickly underwater.
d. It shows that younger rocks are located deeper underwater than older rocks.
Is this statement True or False?
Energy from the sun that enters the Earth system does not leave.
Final answer:
The statement is False. Energy from the sun that enters the Earth system does leave.
Explanation:
The statement is False. Energy from the sun that enters the Earth system does leave. While the Earth system as a whole is a closed system with virtually no mass exchanged between the Earth system and the rest of the universe, energy in the form of solar radiation passes from the Sun to the Earth and Earth emits radiation back out to space. This means that energy does cross the Earth's system boundary, making it a closed system.
Why do you believe many cancers go unrecognized until after the formation of tumors and/or the person becomes
Answer:
Explanation:
Some cancers go unrecognised because they tend not to grow in a steady, linear order. These tumors can remain dormant for long periods of time unless triggered by a promoter agent that will promote its growth followed by a period of rapid and fast growth, such as occurs after angiogenesis is initiated. Thus, equipment that will be extremely sensitive to the processes that these cells before they metastasize has to be developed to detect their presence. Some available equipments detect their actions through the substances they shed into the bloodstream but these cells would have begun metastasis by this period.
Cancers often grow slowly and do not cause symptoms in the early stages, which makes them difficult to detect. Additionally, they can develop in parts of the body that aren't easily observable, leading to further delays in diagnosis.
Explanation:Many cancers go unrecognized until after the formation of tumours and/or the person becomes symptomatic because these diseases often develop slowly and may not cause symptoms in their early stages. The body doesn't always recognize cancerous cells because they are similar to normal body cells.
As a result, they don't cause an immunological reaction. Furthermore, tumours can grow unnoticed in areas of the body that are not easily observed, like the lungs or pancreas. This lack of immediately recognizable symptoms can lead to a delay in diagnosis.
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Homeostasis is the state of maintaining a stable ________
environment despite changing __________
conditions.
Answer:
Homeostasis is the state of maintaining a stable
internal
environment despite changing
external
conditions.
Explanation:
got from edge
Homeostasis is the state of maintaining a stable internal environment despite changing external conditions.
What is homeostasis?Homeostasis is the ability of living organisms to maintain stable internal conditions, despite changes in the external environment. It is a complex, dynamic process that involves multiple physiological systems working together to regulate various parameters such as temperature, blood glucose levels, pH, and others.
These systems use feedback mechanisms to detect and respond to changes, keeping the internal environment within a narrow range of values that are optimal for survival. Maintaining homeostasis is crucial for survival as it allows organisms to adapt to their environment and maintain optimal functioning of their cells, tissues, and organs.
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What landslide will produce the highest amount of kinetic energy for an object of constant mass moving down it
Answer:
Landslide will produce the highest amount of kinetic energy if it moves with high speed and with a large mass.
Explanation:
Kinetic energy is type of energy which depends on the speed and mass of the body. Kinetic energy has direct relation with mass and speed of the body. If speed and mass of an object is higher, maximum kinetic energy will be produced in the object while the object has lower kinetic energy if it has lower speed and less mass. So this phenomenon is also apply on the kinetic energy of landslide. If mass and speed of the landslide is higher, its kinetic energy is also higher.
The ends of the linear chromosomes of eukaryotes cannot be replicated by DNA polymerase. This problem is overcome through the use of telomerase, an enzyme implicated in aging and cell lifespan. Telomerase contains a noncoding RNA that acts as a moving template to add a repetitive DNA sequence at the chromosome tip, preventing the loss of essential DNA. In mammals, the ends of the chromosomes fold back to form a circular structure called a T‑loop.
Select the answers that correctly describe telomeres and the actions of telomerase.
a. Telomerase is a specialized reverse transcriptase and its presence within eukaryotic cells indicates that an early eukaryote was infected by a retrovirus.
b. Inappropriate activation of telomerase can result in cellular immortality, one of the cellular changes implicated in the development of cancer.
c. Telomerase activity is turned off in most human cells, causing the telomeres to gradually shorten as the individual ages.
d. The T-loop protects the chromosome ends from degradation by nucleases and double strand break repair enzymes.
e. Telomerase activity results in a telomere that is completely double-stranded with no single stranded region that would be susceptible to nucleases.
Answer:
B,C, D
Explanation:
Telemerase is a reverse transcriptase enzyme, which adds repetitive nucleotide sequences to the telomere ends of chromosomes.
This enable the telomere to protect the end of chromosomes from degenerating, and also prevent it from fusing with other adjacent chromosomes. Telomere shelved the gene ahead of it on the chromosomes from been truncated as its shorten with each division, It is in turn protected by protein shelterin
With each cell division, the shortened telomere length is replenished by the telomerase enzyme. Therefore, the telomerase maintains the stability of the telomeres.
Consequently the turning off of these enzymes shorten ages, in most human cells because, the telomere length is shortened , and cells failed to undergo cell division which leads to death of cells. Ageing. if this enzyme is over activated, cells undergo uninterrupted division,and multiplication which may lead to tumor.
Telomerase is a specialized enzyme that fills the gap left by DNA polymerase in the replication of the ends of chromosomes, known as telomeres. Its activity can influence processes related to aging and cancer development. The 'T-loop' at the end of chromosomes serves a protective function.
Explanation:The ends of eukaryotic chromosomes, known as telomeres, cannot be replicated by the DNA polymerase enzyme that is crucial in DNA replication. This gap is filled by a specialized enzyme called telomerase. This enzyme has an inbuilt RNA sequence that it uses as a movable template to append a recurring sequence that is DNA to the ends of chromosomes. This helps prevent significant DNA loss.
A few points help define telomeres and telomerase activity:
Telomerase is an exceptional reverse transcriptase. Suggesting that an early eukaryote was infected with a retrovirus is speculative.Uncontrolled activation of telomerase can result in cellular immortality, which is associated with the development of cancer.The activity of telomerase is usually switched off in most human cells, causing gradual shortening of telomeres with aging.The T-loop provides protection to the chromosome ends against disintegration by nucleases or double strand break repair enzymes.Telomerase activity results in a complete double-stranded telomere with no single stranded regions susceptible to degradation by nucleases.Learn more about Telomerase and Telomeres here:https://brainly.com/question/34616854
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Total nucleic acids are extracted from a culture of animal cells and are then mixed with resin beads to which the polynucleotide 5′-TTTTTTTTTTTTTTTTTTTTTTTTT-3′ has been covalently attached. After a short incubation, the beads are then extracted from the mixture. When you analyze the cellular nucleic acids that have stuck to the beads, which of the following is most abundant?A. DNA.
B. tRNA.
C. rRNA. (it is not this one, I put this and it was wrong.)
D. mRNA.
E. Primary transcript RNA.
Answer:
D. mRNA.Explanation:
1. It is mRNA because it is the only type of RNA that is polyadenylated and the poly (A) tail at the 3' end of it.
2. It would be able to base pair with the strands of poly(T) on the beads by base pairing, and it can stick to poly (T) on the beasd.
3. DNA would not be found in the sample, as the poly (A) tail is not encoded in the DNA and long runs of T are rare in DNA.
What is the composition of VLP? What are its characteristics?
Answer:
Explanation:
VLP are virus like particles they resemble virus but are not virus because they do not have viral components, they lack genomic material but contain protein that makes up a viral plasmid. They cannot replicate in cells.
VLP occurs naturally and some could be synthesize artificially by inducing or express virus structural protein which later assembly to form VLP.
VLP have been produced from wide variety of virus depending on the purpose of synthesis example include Parvoviridae--- adeno-associated virus), Retroviridae --HIV) some are produce by class one retrotransposons that are not genetically effective because the do not posses a viral envelope.
2 Points
The graph below shows how natural processes and human activities affect
climate
Which
claim
Thermal disruption (W/m)
NON
Agents of Climate Change
Natural Human
processes activities Halocarbons
Ozone
со,
Net change Greenhouse gases
Net change
in energy
Total aerosols due to human
from Sun
activities
Warming effect Cooling effect
supported by the data?
O
A. Natural processes have a larger impact on climate change,
O
B. Human activity has a larger impact on climate change.
O
C. Natural weather patterns are evidence against climate change.
O
D. There is no reason to believe humans are causing climate change.
Answer:B human activity
Explanation:
I just did it :)
Climate change is occurring at a very fast pace and human interventions are leading to a rise in global warming. Human actions are contributing to thermal disturbances as well.
The statement that supports the data is:
Option B. Human actions have a larger effect on climate change.
This statement can be supported by:
Human actions like the burning of fossil fuels including petrol, coal and diesel adversely affect climatic factors.Humans cut an enormous amount of plantations and clears lands for building dams and industries that result in soil erosion and flooding.Disproportionate use of fertilizers comprising toxic compounds deteriorates soil quality and emits nitrogen-containing compounds.Thus, humans are the main reason for climate change.
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Which of the following is not true of a drug?
a) it may change anyone's mood
b) it may help someone cope with life.
c) they may be prescribed by a doctor
d) they may be bought over a chemist's counter
e) some drugs are completely harmless
Answer:
B)t may help someone cope with life.
Explanation:
Not a long term fix
In which kind of solution is the concentration of solutes the same inside and outside of the cell?
Explanation: if im correct it should be isotonic solution because isotonic is when two solutions have the same osmotic pressure across a semipermeable membrane which allows for free movement of water across the membrane without changing the concentration of solutes on either side.
Hope this helps
Answer:
A.) isotonic
Explanation:
yes.
Select the correct answer.
Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities
such as moving muscles. Explain the energy transformation in this process.
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
B. Mechanical energy from broken bonds is transformed into chemical energy for muscles.
C. Mechanical energy from broken bonds is transformed into electrical energy for muscles.
D. Heat energy from broken bonds is transformed into electrical energy for muscles.
Answer:
A
Explanation:
Food (glucose) is a store of chemical energy which is broken down to produce atp which is then transformed into mechanical energy for muscles.
Answer:
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
Explanation:
this is the right answer trust me because i trust me
According to embryology, why do fish and birds have a common ancestor?
They both have embryos with gill slits and tails.
They both have embryos with traits that eventually disappear.
They both have embryos that develop into adults.
They both have embryos that form from a fertilized egg.
Answer:
A
Explanation:
Many species of organisms are found only on islands. Lemurs are found only on Madagascar and koalas only on Australia. Which factor contributes MOST to this situation?
Answer:
genetic isolation is the answer
Answer:
C
Explanation:
I got it right on usa test prep;)
Corn smut and wheat rust are crop diseases caused by_____fungi.
Answer:
Club Fungi
Explanation:
Club Fungi: with a simple or branched often club-shaped sporophore.
Answer:
Club fungi
Explanation:
Club Fungi: with a simple or branched often club-shaped sporophore.
The presence of a beard on some goats is determined by an autosomal gene that is dominant in males and recessive in females. Heterozygous males are bearded, while heterozygous females are beardless. What type of inheritance is exhibited by this trait?
Answer:
Explanation:
Some autosomal genes may affect the phenotypes of individuals of one sex more than individuals of the other but they play no part in the development of being a male or being a female. this type of gene is thus a sex influenced autosomal gene. The type of inheritance exhibited by this trait in the male goat follows the autosomal dominant pattern of inheritance meaning the for the trait to be expressed, it has to be the dominant allele form on the X chromosome. In the females, this trait follows the autosomal recessive pattern of inheritance such that for a female goat to be bearded, the trait must be inherited as a homozygous recessive trait, while an heterozygous or a homozygous dominant female will be beardless.
The presence of a beard on some goats is determined by an autosomal gene that is dominant in males and recessive in females, exhibiting autosomal inheritance.
Explanation:This trait exhibits autosomal inheritance. The presence of the beard trait is determined by a gene located on an autosomal chromosome, not on the sex chromosomes. It is dominant in males, which means that even if they have only one copy of the gene, they will exhibit the trait. In females, the gene is recessive, so they must have two copies of the gene to have the trait.
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Consider the following experiment: True-breeding tall pea plants are cut short before being pollinated to determine if there is an effect on the offspring. Which explanation for trait inheritance is this testing?
This experiment is testing the principle of trait inheritance known as Mendelian inheritance. It aims to understand if cutting short the true-breeding tall pea plants before pollination affects the traits inherited by the offspring.
Explanation:This experiment is testing the principle of trait inheritance known as Mendelian inheritance. Mendelian inheritance refers to the idea that traits are determined by discrete units called genes, which are passed from parents to offspring. By cutting short the true-breeding tall pea plants before pollination, the experimenter is investigating if this has an effect on the traits inherited by the offspring. This allows for the examination of whether the trait is dominant or recessive based on the appearance of the offspring.
Which of the following represents how Ebola spreads in a community?
(Choice A)
A
Ebola is airborne and spreads quickly in large congregations (e.g. movie theaters, airplanes).
(Choice B)
B
Ebola is waterborne and can spread through infected rivers and lakes.
(Choice C)
C
Ebola is foodborne and can infect individuals that don’t thoroughly wash their fruits and vegetables.
(Choice D)
D
Ebola is spread when body fluids (e.g. blood) from a sick individual enter a healthy individual.
Answer:
D
Ebola is spread when body fluids (e.g. blood) from a sick individual enter a healthy individual.
Explanation:
i took the question and got it correct. please like and rate my answer. brainliest please?