Which describes a trait from a recessive gene? A)It causes a mutation. B)It masks a dominant gene trait. C)It can appear if it is heterozygous. D)It usually appears only if it is homozygous.
Answer:
It usually appears only if it is homozygous
Explanation:
According to Mendel's principles of inheritance, of which his law of dominance is one of them, an organism will receive two forms of gene for a particular trait called ALLELES from each parent.
Mendel discovered in his experiments that an allele is capable of masking the expression of another in a combined or heterozygous state. The allele that masks or is expressed is called DOMINANT allele while the allele that is masked is called RECESSIVE allele.
In a heterozygous state i.e. combined form of the different alleles, the dominant allele is phenotypically expressed over the recessive allele. Hence, the recessive phenotype or trait will only be expressed if the recessive allele are homozygous or same.
Which describes the primary function of the nervous system in keeping the body in homeostasis? It processes the environment and sends out signals. It controls movement and provides structure. It physically breaks down and absorbs food. It puts oxygen in the blood, which is essential for life.
The right answer is: It processes the environment and sends out signals.
Homeostasis is the ability of a system to maintain the equilibrium of its internal environment, regardless of external constraints. At the level of an organism, it is the set of parameters that must remain constant or adapt to specific needs, such as body temperature, blood glucose, blood pressure or heart rate.
Answer:
A.) It processes the environment and sends out signals.
Mutations can cause cells to divide repeatedly and this can eventually cause __
Answer:
The answer is tumor
Explanation:
Cells with mutations have often their cellular cycle desregulated. That means that they divide more times that they often do. This can lead to a tumor formation (a mass of cells wich grows out of control). Tumor can lead to cancer (which implies factors more complex).
A young woman had a baby and wished to collect child support from the father. her blood type is ab and the baby's blood type is
a. there are two possible fathers: jim (who is type
a.and michael (who is type o). which man could be the father?
If a human system fails to function properly,what is most likely to result
Differences among organisms are caused by differences in the _____. differences among organisms are caused by differences in the _____. types of inorganic compounds present in each organism sizes of the organic molecules in each organism types and relative amounts of organic molecules synthesized by each organism elemental composition from organism to organism
Differences among organisms are caused by differences in the relative amounts of organic molecules synthesized by each organism's elemental composition from organism to organism.
What are genetic variations?The ability of natural selection to alter the frequency of alleles already present in the population makes genetic diversity a crucial factor in evolution.
Random mating, random fertilization, and recombination between homologous chromosomes during meiosis, which rearranges alleles within an organism's progeny, are all possible sources of genetic variation. Mutation, which can generate entirely new alleles in a population, can also cause genetic variation.
A population benefits from genetic variety because it allows certain members to adapt to their environment while still ensuring the population's survival.
Therefore, differences among organisms are caused by differences in the relative amounts of organic molecules synthesized by each organism's elemental composition from organism to organism.
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The nurse is performing a physical examination of a client by placing the left hand on the back and supporting the client's right side between the rib cage and the iliac crest. which physical assessment maneuver is the nurse performing on this client?
which of the following is not caused by the moon?
A.moon rise
B sunrise
C tides
D eclipses
The processes of encoding, storage, and retrieval are seen as part of the ____________ model of memory
The nutrient that provides 4 calories per gram and is needed to build and repair body tissue is __________.
protein
carbohydrates
vitamins
minerals,
The nutrient that provides 4 calories per gram and is needed to build and repair body tissue is protein.
Proteins are macronutrients, along with fats and carbohydrates.
While carbohydrates also provide about 4 calories per gram, fats provide about 9 calories per gram.
However, proteins are distinct in their role in the body.
They supply the amino acids that are the building blocks for body tissues.
Thus, they are essential for tissue repair and growth.
Unlike the energy-yielding nutrients (carbohydrates and lipids), which our body can survive without for several weeks, proteins are crucial because they provide the nitrogen that cells need to create nucleotides, nucleic acids, and new proteins.
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The development of vascular tissue allowed some seedless plants to
A. use alternation of generations.
B. perform photosynthesis.
C. grow taller.
D. make sugars for energy.
pls help asap
Here, B represents the allele for black hair and b represents the allele for white hair. If both the rabbits crossed had genotype Bb, what will be the phenotypic ratio for the observable monohybrid crosses (complete dominance)?
If B represents the allele for black hair and b represents the allele for white hair then a cross between Bb and Bb will lead to the following kind of progenies.
Parental: Bb x Bb
F1 : BB Bb Bb bb
Genotypic ratio : 1:2:1
Phenotypic ratio : 3:1
The phenotypic ratio indicates that three of the four off springs will have black hair while one of the four off springs will have white hair.
Amongst 3 offsprings which have black hair, one will be homozygous dominant whereas other two which have black hair color will be heterozygous dominant.
Many cancer drugs known as "antimitotics" target microtubules. what is the first stage of mitosis at which these drugs are likely to have an effect? bio
Living cells depend on a precise balance of water and solutes. which term describes the control of the gain or loss of water and dissolved solutes, such as the ions of nacl and other salts.
A fetus can be exposed to a variety of harmful agents that may cause birth defects. these agents are referred to as
Water molecules are ____________ due to _________bonding. This property helps water molecules to stick to each other and allows for the movement of water from plant roots up to plant leaves. A) cohesive; ionic B) cohesive; hydrogen C) adhesive; hydrogen D) adhesive; covalent
How does pregnancy begin?
A. Differentiation
B. Fertilization
C. Deviation
D. Contraction
In which stage(s) of non-rem sleep do brain waves become larger and punctuated with occasional sudden bursts of electrical activity??
Answer:
The correct answer is second stage of non-rem sleep.
Explanation:
The NREM of the non-rapid eye movement sleep, also called the quiescent sleep comprises three stages of sleep. In NREM, there is little or no movement of eye witnessed in any of the three stages, which is dissimilar to REM sleep.
In the second stage of NREM sleep, no movement of eyes is witnessed, and dreaming is very rare. The sleeper can get awaken quite easily. In the stage, the electroencephalogram readings demonstrate sleep spindles, that is, the brief bursts of high-frequency activity of the brain, and K-complexes.
What would most likely happen to the chipmunk population in 2014 if the population went up to 22 million in 2013? mc026-1.jpg The chipmunk population would continue to increase. The carrying capacity would increase. The chipmunk population would crash. The death rate would decrease.
The answer is:
C. The chipmunk population will crash.
Explanation:
This is because the population would reach conveying capacity. This way, the support would be extended and inadequate to sustain the high Chipmunk population. The increased competition for scant resources between the Chipmunks would result in continued deaths rate of individuals that is important than the birth rate.
It is often stated that the phosphate bonds in atp are "high energy," but in fact, they are not notably high in energy. rather, they are easy to break, and the δg of hydrolysis is a "useful" quantity of energy. what makes the phosphate bonds easy to break? negative charges on phosphate groups repel each other. positive charges on amino groups repel each other. high acidity attacks bonds between amino acids. high alkalinity attacks bonds between phosphate groups. they are close to the destabilizing nitrogenous base adenosine.
The answer is Negative charges on phosphate groups repel each other. The oxygen groups of a phosphoanhydride in ATP have electron cloud that repels each other. On hydrolysis, once a phosphate is lost, the electrostatic repulsion is reduced.
When ATP is hydrolyzed, it forms more hydrogen bonds with surrounding water molecules that when ATP is unhydrolyzed. Therefore, more energy is released since more bonds are formed than are broken. The net delta G is positive during hydrolysis of ATP.
The phosphate bonds in ATP are considered 'high energy' due to the repulsion of negative charges on the phosphate groups, making them easy to break and release energy. This process of breaking down ATP is a prime energy source for various cellular functions.
Explanation:The 'high energy' often attributed to phosphate bonds in ATP (adenosine triphosphate) originates from the instability caused by the repulsion between the closely aligned negative charges on the phosphate groups. ATP has three phosphate groups that are negatively charged and these negative charges repulse each other, creating strain on the bonds that attach them to the ATP molecule. This repulsion makes the bond easy to break, thus releasing the stored energy within ATP. The breaking down of ATP to ADP (adenosine diphosphate) and an inorganic phosphate group, in a process called hydrolysis, is a key source of energy for many cellular processes.
The subject of this question is Biology.
The phosphate bonds in ATP are often referred to as "high energy," but in reality, they are not notable for their high energy content. Instead, these bonds are easy to break due to the presence of negative charges on phosphate groups that repel each other.
This repulsion weakens the bonds and makes them susceptible to hydrolysis, which releases a "useful" quantity of energy. The proximity of the phosphate bonds to the destabilizing nitrogenous base adenosine also contributes to their ease of breaking.
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The nuclear lamina is an array of intermediate filaments that line the inner side of the nuclear membrane. if a chemical treatment caused the lamina to disassemble, what would you expect to be the most likely immediate consequence?
Disassembly of the nuclear lamina would likely cause a loss of structural integrity of the nucleus, leading to potential nuclear deformation and problems with DNA organization, as well as cell division processes.
If a chemical treatment caused the nuclear lamina to disassemble, the most likely immediate consequence would be a compromise in the structural integrity of the nucleus. The nuclear lamina is a critical component made up of lamins, which are intermediate filaments that provide mechanical support and maintain the shape of the nucleus. This meshwork also plays an essential role in organizing chromatin, regulating gene expression, and ensuring correct replication and cell division.
Without the lamina, we could expect potential nuclear deformation, difficulty in organizing the DNA and associated machinery for replication and transcription, and problems with cell division processes including mitosis. Intermediate filaments are essential for cellular functions, and their absence in the structural framework of nuclear lamins could lead to a cascade of detrimental cellular events.
The hypothalamus uses releasing hormones to regulate secretions of tropic hormones from the
A true experiment involves the _____ of the independent variable.
Final answer:
A true experiment involves the manipulation of the independent variable, with the purpose of observing changes in the dependent variable. Random assignment of subjects to control and experimental groups is key to ensuring the validity of the experiment, thereby allowing researchers to accurately test their hypotheses and draw causal conclusions.
Explanation:
A true experiment involves the manipulation of the independent variable. This process entails intentionally changing the independent variable to observe the effect on the dependent variable. Experimental research is marked by this careful manipulation, coupled with the measurement of the dependent variable to assess the impact. Furthermore, for an experiment to be considered a true experiment, subjects must be randomly assigned to either the control or the experimental groups, ensuring that any differences observed in the dependent variable are due to the manipulation of the independent variable and not other confounding factors.
In an ideal experimental design, the only distinction between the experimental and control groups should be the exposure to the experimental manipulation. The experimental group will encounter a particular level of the independent variable due to this manipulation, while the control group will not. Researchers then measure the differences in the dependent variable and analyze the data to draw conclusions about the relationship between the independent and dependent variables, thereby testing their hypothesis.
The bacteria in a colony are unable to perform transduction. How would this hurt the bacterial company's chance for survival
Answer:
The bacteria would be genetically more similar.
Explanation:
Where is the abdominal muscle that can only compress the abdomen?
The transversus abdominis is the abdominal muscle that only compresses the abdomen. It is the deepest muscle layer in the abdominal wall and acts like a corset to increase intra-abdominal pressure. Unlike other abdominal muscles, it does not aid in trunk movements such as flexion or rotation.
Explanation:The abdominal muscle that can only compress the abdomen is called the transversus abdominis. This muscle is the deepest layer of the antero-lateral wall of the abdomen. Its muscle fibers run horizontally, or transversely, which is where it gets its name.
The transversus abdominis muscle plays a crucial role in maintaining abdominal wall tension and compressing the abdominal organs, effectively increasing intra-abdominal pressure. It acts much like a corset, tightening around the viscera. This muscle, along with the internal and external obliques and the rectus abdominis, comprises the abdominal muscles that cover the anterior and lateral abdominal region. This group of muscles contributes to various movements and rotations of the trunk but only the transversus abdominis functions solely to compress the abdomen without contributing to movements such as flexion or rotation like the other abdominal muscles do.
The rectus abdominis is another important muscle in the abdominal group, often referred to as the "sit-up" muscle. This muscle extends through the entire length of the trunk and is characterized by the tendinous intersections that give rise to the 'six-pack' appearance in a well-trained abdomen.
The cytoplasm and two nuclei that are formed during mitosis are separated into two identical daughter cells during _______.
Answer:
The cytoplasm and two nuclei that are formed during mitosis are separated into two identical daughter cells during cytokinesis.
Explanation:
Partitioning in two copies is called cytokinesis and occurs in the animal cell from the outside inward, that is, as if the cell were strangled and split in two (centripetal cytokinesis).
There is a distribution of organelles across the two sister cells. Note that cytokinesis is actually the division of cytoplasm. This division may start already in anaphase, depending on the cell.
You are working with different tissues in lab, unfortunately you forgot to label them and your friend wants to borrow your slide containing liver tissue. based on your knowledge of the liver and these descriptions of different slides which is most likely to be liver tissue?
To identify the liver tissue, look for hepatocytes arranged in plates around a central vein, forming hexagonal hepatic lobules. Each lobule includes sinusoids and portal triads. These features are unique to liver tissue.
To identify the liver tissue among your slides, you should focus on the unique histological features characteristic of the liver.
Hepatocytes are the main functional cells of the liver, and these cells often appear polygonal in shape, organized into plates around a central vein structure. You'll also notice that liver tissue has a distinctive arrangement called the hepatic lobule, which includes the central vein, portal triads (consisting of a bile duct, hepatic artery, and portal vein), and sinusoids, which are specialized capillaries that run between the plates of hepatocytes.
On your slide, look for these key features:
Hexagonal hepatic lobules with a central vein.Radially arranged plates of hepatocytes.Sinusoids appearing as spaces between hepatocyte plates.Portal triads located at the corners of the lobules.By identifying these structures, you can confidently determine which slide is your liver tissue.
In which structure do gametes usually unite to produce a zygote?
Answer:
Fallopian tube
Explanation:
Fallopian tube is also called as oviduct and serves to deliver the ova from ovary to the uterus. Ovulation results in release of egg from ovary which then enter the fallopian tube. Fallopian tube also serves as site of fertilization during which egg units with male gamete sperm to form a diploid zygote.
which of these is a innate adaptation?
A.hunting in packs
B.mating
C.fighting for protection
D.all behaviors are innate
Mating is a innate adaptation.
Answer: A lot of animals such as lions and tigers and big cats mate to make love so mate is the correct anwser.
MATING
An otr® is explaining the purposes of therapeutic exercise and therapeutic activity to a physician. what are the primary reasons that otrs use these interventions for musculoskeletal conditions?
In summary, therapeutic exercise and activity are fundamental components of occupational therapy for musculoskeletal conditions. They are tailored to address the specific needs of the patient, with the ultimate goal of restoring function, reducing pain, and enhancing overall quality of life.
The primary reasons that occupational therapists (OTRs) use therapeutic exercise and therapeutic activity for musculoskeletal conditions are to:
1. Improve Range of Motion (ROM): Musculoskeletal conditions often lead to a reduction in the normal movement of joints. Therapeutic exercises are designed to gently increase the ROM, thereby improving flexibility and joint mobility.
2. Increase Muscle Strength: Specific exercises can help strengthen the muscles around the affected joint or area, providing better support and reducing the risk of further injury.
3. Enhance Neuromuscular Control: This involves improving the communication between the nervous system and muscles. Enhanced neuromuscular control can lead to better coordination and balance, which is crucial for performing daily activities without pain or injury.
4. Reduce Pain and Inflammation: Certain exercises and activities can help alleviate pain and reduce inflammation in the affected area by promoting circulation and the delivery of nutrients to the tissues.
5. Improve Functional Mobility: By addressing the above areas, therapeutic exercises and activities aim to improve a patient's ability to perform functional tasks, such as walking, climbing stairs, or reaching for objects, with greater ease and less discomfort.
6. Prevent Deformity and Contracture: Regular exercise can prevent the development of deformities and contractures that may result from immobilization or muscle imbalance due to musculoskeletal conditions.
7. Facilitate Healing and Tissue Repair: Controlled exercises can promote the healing process by stimulating tissue repair and remodeling, which is essential for the recovery of injured tissues.
8. Educate the Patient: OTRs use therapeutic exercises as an opportunity to educate patients about their conditions, the importance of adherence to the exercise regimen, and ways to manage symptoms independently.
In summary, therapeutic exercise and activity are fundamental components of occupational therapy for musculoskeletal conditions. They are tailored to address the specific needs of the patient, with the ultimate goal of restoring function, reducing pain, and enhancing overall quality of life.