You have no choices however, A gene pool is defined as a sum total of all the genes present in an inter-breeding population at a specific time. It includes all the alleles of all the loci within the genes of a interbreeding population or species. The composition of the gene pool of a population can change with course of a time due to evolution
The best definition for a gene pool is (a) the sum of all genetic traits in a population's individuals at a given time, encompassing all alleles for every gene in the population.
The best definition for a gene pool is a. the sum of all genetic traits in a population's individuals at a given time. A gene pool consists of all the genetic information in the population. This includes all of the various alleles for every gene present in all individuals within the population. The diversity and frequency of these alleles characterize the population's genetic diversity. Within a population's gene pool, mutations can lead to new alleles, which may provide advantages or disadvantages to individuals in the population. Over time, these changes can drive the evolution of the population by natural selection, where beneficial traits become more common in the gene pool while detrimental ones may be weeded out.
The correct question is:
Which of the following best defines a gene pool?
a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population
In most cells, there are more ______ molecules inside the cell and more sodium molecules outside the cell.
Answer:
it as more organic molecules inside
When your pH becomes out of balance (too basic or acidic) how will it affect you? A. Your cells will lose their membrane permeability. B. You will get severe heartburn. C. Your proteins and enzymes will lose shape and stop functioning. D. You will crave greasy foods like french fries to balance your pH.
Answer:
B
Explanation:
Too much acidic environment is what causes heart burn for many people and the solution could be taking milk of magnesia which is a base
In case of pH disbalance, the proteins and enzymes will lose shape and stop functioning. The correct option is C.
What are proteins?Proteins are massive, complex molecules that perform numerous important functions in the body.
As enzymes are also proteins, in case of any pH disbalance or temperature changes, protein will loose their shape and will stop functioning.
Thus, the correct option is C.
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Why did Mendel use pea plants in his experiments? A. They are haploid organisms.
B. They have no chromosomes.
C. They self-fertilize.
D. They have no recessive traits.
Answer:
C. They self-fertilize
Explanation:
A is wrong: they are diploid
B is wrong: it definitely has chromosomes
D is wrong: since it has chromosomes it can potentially have recessive traits
Babies are born with billions of brain cells. How many brain connections do babies have by the time they are three years old? Describe three factors that
contribute to the brain connections multiplying.
Answer:
From birth to three years old they produce 700 neural connections. A baby has 100 billion neurons. It multiplies to trillions at two years old, most probably at three it would be quadrillions. Several factors can affect brain development; the surrounding environment, social interaction, and experiences. 5.0.
Explanation:
Answer: From birth to three years old they produce 700 neural connections. A baby has 100 billion neurons. It multiplies to trillions at two years old, most probably at three it would be quadrillions.
Explanation: Babies are born with billions of brain cells, and by the time they are three years old, they have formed trillions of brain connections. This rapid increase in brain connections is a result of the brain's remarkable ability to adapt and change in response to experiences. As babies interact with their environment, engage in play, and receive nurturing and stimulating experiences, their brain cells form new connections, creating a complex network of neural pathways. The exact number of brain connections varies between individuals, but it is estimated that by the age of three, a baby's brain can have trillions of connections. These connections are essential for cognitive development, learning, and the foundation of future abilities and skills.
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Hardness is
A. the way a mineral breaks under pressure
B. the least informative property of a mineral
C. measured using the Mons scale
D. the way mineral splits when stressed
Answer:
Hardness is
A. the way a mineral breaks under pressure
Explanation:
Answer:
The other person is wrong... it is
the mohs one
Explanation:
C
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Which source contains most of earths fresh water
Answer:
A large portion of Earth's crisp water is secured away in the polar tops. A large portion of the rest is ground water. All things considered, there are three primary wellsprings of crisp water: groundwater, the water in lakes and waterways and the water tied up in the strong state as ice.
Fresh water is the water found either in the form of liquid or ice, which has low content of salts. Lakes, river, ponds, glaciers, are some examples of fresh water bodies.
The majority of the world's fresh water is stored in icecaps and glaciers.
Sources contain fresh waterFresh water is the only water that can be consumed.Only about 0.3% fresh water is present in the earth surface.Over 68% of fresh water on earth is found in icecaps and glaciers.Over 30% of fresh water is present in groundwater.Thus, the most of the fresh water of earth is present in icecaps and glaciers.
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Surface currents are a result of all of the following except
the moon’s gravitational pull
shape of the ocean basins
global wind patterns
Earth’s rotation
Answer:
the moon’s gravitational pull
Explanation:
Surface currents are a result of all of the following except the moon’s gravitational pull.
Surface currents are created by "global wind patterns", Earth's rotation, and the shape of ocean basins, but not by the moon's gravitational pull, which instead affects tides.
Surface currents in the ocean are a result of several factors, but not the moon's gravitational pull, which primarily affects tides rather than surface currents. The main drivers of surface currents include global wind patterns, Earth's rotation, which contributes to the Coriolis effect, and the shape of ocean basins. These currents are responsible for distributing heat around the planet and have a significant influence on the climate. It is the tides that are affected by the moon's gravity, whereas surface currents are influenced by other factors.
Mycelium allow fungilto absorb more nutrients by providing a higher surface to area ratio. True or false
Answer:
The Answer is True:
Explanation:
Which part of the plant contains the most cells specialized for photosynthesis?
roots
stems
leaves
flowers
ANSWER:
Leaves of a plant contain cells specialised for photosynthesis. The leaves are called "food factories of plants" because they prepare food for the plants.
EXPLANATION:
Leaves contain chlorophyll which is a "green coloured pigment" that traps sunlight required for making food. The leaves with the help of water transported from roots through the xylem, sunlight and carbon dioxide prepare food for the plants. The food is transported to other parts of the plant through the phloem and oxygen is released by the plants.Answer:
C
Explanation:
leaves
what is a pollutant?
Explanation:
a substance that pollutes something, especially water or the atmosphere
A pollutant is something that makes water or air polluted.
What happens during inhalation? A. The diaphragm and the rib cage return to their normal resting positions. B. The diaphragm contracts and moves down while the rib cage moves up and out. C. The diaphragm expands and moves up while the rib cage moves up and out. D. The diaphragm contracts and moves down while the rib cage moves down and in.
To which of the following organic compounds do nucleic acids belong?
A. nuclear compound
B. hydrogen compound
C. carbon compound
D. nitrogen compound
Answer:
B. hydrogen compound
Explanation:
Nucleic acids belong in a hydrogen compound.
Nucleic acids should only be placed in that group because of the amount of harm or impact it doers.
]When the concentration of a substance reaches equilibrium on both sides of a cell membrane, it can continue moving in and out of the cell using ________________.
Answer:
Active transport
Explanation:
Diffusion occurs when molecules move from an area of high concentration to a low concentration until equilibrium is achieved. This does not require energy because it is a spontaneous process. This also included osmosis when there’s a difference in the concentration of solutions across a semipermeable membrane, water molecules move from the low concentration the solution to high concentration until the two solutions are isotonic to each other.
To move molecules against a concentration gradient, energy must be expended. In cell this is through the energy of ATP molecules.
LOTS OF POINTS HELPP
Which body system is used for calcium storage?
Integumentary system
Muscular system
Skeletal system
Cardiac muscular system
The skeletal system stores most of the body's calcium. The skeletal system includes bones and teeth. Small portions of calcium are stored inside blood and muscles, yet they aren't used to store calcium. This means that the answer is C. Skeletal system.
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What is the basic molecule in chromosomes?
Answer:
DNA
Explanation:
DNA is the basic molecule in chromosomes.
What increases the frequency of adaptive mutations in a population over time
Answer:
Natural selection
Explanation:
Natural selection is the process via which the frequency of adaptive mutations in the population increases. In adaptive mutations, the mutational changes that are caused through natural selection, make individual to survive better in that particular environment when passes through stress conditions like temperature, drought etc. through natural selection the fittest of all is selected (the one that had adapted in that environment).
_3. In which of the following organelles is a cell's ATP produced?
a. mitochondrion b. endoplasmic reticulum c. Golgi ap
Answer:
Mitochondria.
Explanation:
It's the powerhouse of the cell :) But really, the mitochondria is the main source of power and energy for the cell.
Soil formation is most influenced by__. Wind speed. Cloud cover. Air pressure. Rain fall.
Answer:
D. Soil formation is most influenced by Rainfall.
Explanation:
Answer:
Rain fall.
Explanation:
Soil formation is most influenced by rain fall.
which is a purine base in dna
Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
U1:51:51
Which has most likely been peer reviewed?
an article on the benefits of eating cheese, featured in Crosscreek Dairy Monthly magazine
an article on the benefits of wearing shoe inserts, featured in Bob's Footwear circular
an article on the beneficial bacteria in yogurt, featured in Medical Joumal of Gastroenterology
an article on beneficial face creams, featured in Beauty and You magazine
Save and Exit
Submit
Mark this and return
Answer:tap in shorty
Answer:
Option C is correct,an article on the beneficial bacteria would be most likely to be reviewed.
what physical traits were favored in the peppered moth species after the Industrial Revolution
Their skin color was dark which made the moths blend in. During the Industrial Revolution, the soot from factories caused the trees to become black. The light colored moths became easier to kill because they could not blend into their environment.
Answer:
Dark Skin Color
Explanation:
After the industrial revolution, the tree trunks got covered with dark soot and the lichens present on these tree trunks were killed. Under these polluted conditions, the dark-colored moth could blend themselves easily with soot-covered tree trunks. Hence, these dark-colored moths exhibit better survival and reproductive rate than the light-colored moth population.
So, natural selection favored light skin color after the industrial revolution.
The picture represents the excretory system.
Which is represented by the X?
nephron
ureter
bladder
urethra
Answer:
I think it's that it's ureter
Answer: Ureter
Explanation:
Ureter can be defined as the structure which is a part of excretory system of the body. They are made of smooth muscle fiber that functions by propelling the urine from the kidney to the urinary bladder.
It is usually 25-30 cm long and 3-4mm wider in the dimensions.It is lined by the urothelium which is a type of transitional epithelium and an extra layer of smooth muscle that favors the peristalsis.
The correct answer is option B
the polymer of proteins is called
Answer:
proteins are polymers made of monomers called amino acids
Explanation:
Protein is a polymer made up of Amino acids.
What are Amino Acids?
Amino acid is a compound that consist of an amino group, carboxyl group, and a specific side chain.There are 20 essential amino acids forming protein.Many amino acid connect together by a series of peptide bond to form a protein.Hence, we come to a conclusion that protein is a polymer made up of many amino acids joined together by peptide bond.
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The expression 40x2 – 65x + 50 represents the sum of the interior angles of a regular pentagon in degrees. If the interior angles of the pentagon are equal, which expression represents the measure of two angles?
2x2(20 – 32x + 25x2)
2(8x2 – 13x +10)
5x2(8x2 – 13x + 10)
5(3x2 – 8x + 5)
Answer:
2(8x^2-13x+10)
Explanation:
There are 5 angle s in a pentagon and we are assuming are pentagon is a regular one so the angles are all congruent.
Let's let A represent the measurement of one of the those angles in our pentagon.
The sum of our angles in our pentagon would then be A+A+A+A+A or 5A.
But we are also given that this equals 40x^2-65x+50.
So that means 5A=40x^2-65x+50.
If we divide both sides by 5 we can find what one of our angles is in terms of x. So let's do that A=8x^2-13x+10.
So we want to know the sum of two our angles, we want to know what is A+A or 2A. 2A=2(8x^2-13x+10). To obtain that I just multiplied both sides of A=8x^2-13x+10 by 2.
Answer:
5(3x2 – 8x + 5)
Explanation:
It's D on edg 2020
1. Do you think it is fair that Watson and Crick were credited with the discovery when so many other scientists were involved? Why or why not? Think about your opinion and then back it up with at least one fact. (10 points) APEX
Answer:
Yes, I agree that the discovery of DNA model by Watson and Crick took help from the work of many other scientists which were not credited with the discovery as much as both of them were credited.
Explanation:
One of the major breakthroughs made in the discovery of DNA structure was the work of a female scientist, Rosalind Franklin who did X-ray crystallography according to which DNA was helical in shape. Watson and Crick took strong support from this theory and proved that DNA was helical in shape. However, she was a perfectionist and she had not published her work yet while the Watson and Crick were fast enough to do so. Before that Watson and Crick while working independently formulated incorrect DNA models in which bases were placed outside while phosphate groups were outside. However, Rosalind Franklin's work was of substantial help to both of them. There was another colleagues of Franklin, Maurice Wilkins who was working with Franklin in doing X-ray studies. n 1962 Watson, Crick, and Maurice Wilkins were jointly honored with the Nobel Prize in medicine for their model of DNA in 1953 but she was not nominated for Nobel price because it could only be shared by three scientists maximum and Franklin was died by that time too.
Therefore, i think it was not fair with Franklin that she never received the credit of the work which she did tirelessly and which became basis of modern DNA model.
Hope it helps!
No, it is not fair that Watson and Crick were only credited with the discovery of the DNA model.
What is Watson and Crick's model of DNA?Watson and Crick proposed a model of DNA in 1953 which is semi-conservative in nature. This model of DNA has a double helix that is bound together with the help of units known as bases.
During the time of Watson and Crick, Erwin Chargaff proposed the rule of base pairing which is also seen in Watson and Crick's model of DNA. According to him, the amount of adenine is always equal to the amount of thymine, and the amount of guanine is always equal to the amount of cytosine.
[A] = [T] and [G] = [C]
Therefore, Watson and Crick were not the only ones who were credited with the discovery of the DNA model.
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What cell makes ribosomes
Answer:
The Nucleolus makes ribosomes.
Explanation:
How do you extract the oil from the fruit of the Tung tree?
Answer:
Tung oil is made from pressed seeds from the nut of the tung tree. The tung tree, native to China, is named for its heart-shaped leaves because “tung” is Chinese for “heart.” In the 14th century, Chinese merchants were noted for using tung oil to waterproof and protect wooden ships from the eroding powers of the sea. There are even mentions of tung oil appearing in the writings of Confucius in around 400 B.C. For these reasons, it is also sometimes referred to as “China wood oil.
Explanation:
To extract oil from Tung tree seeds, the seeds are either pressed or crushed, or, for more efficiency, a solvent like n-hexane is used. The solvent is then distilled off, leaving the Tung oil. Traditional methods might involve boiling and skimming the oil from the surface.
Initially, Tung fruit is harvested and the seeds inside are collected because the oil is contained within these seeds. The seeds might be dried and then crushed or pressed to release the oil. However, for higher efficiency, chemical solvents such as n-hexane can be used to extract the oil from the seed material. After extraction, the solvent is distilled off, leaving behind the Tung oil, which can then be further processed and purified.
A new organism has been discovered. This organism has a bilaterally symmetric unsegmented body. It's capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body. Based on this evidence, which phylum would this new animal likely be classified into?
A. Mollusca
B. Echinodermata
C. Nematoda
D. Arthropoda
Answer:
The correct answer option is A. Mollusca.
Explanation:
We are given that a new organism has been discovered which has a bilaterally symmetric unsegmented body and is capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body.
Given the above information, we are to determine which class this phylum can be classified into.
The most appropriate answer for this is Mollusca. Here, the description matches that of a snail.
Other classifications like arthropoda have segmented bodies while echinodermata are symmetrical.
Answer:
A. Mollusca
Explanation:
Mollusca is the second-largest phylum of invertebrate animals. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high
Which of the following is true of conifers?
The sporophytes grow directly from the gametophyte
The spores release from the gametophyte
The gametophytes grow directly from the sporophyte
The spores release from the male cones
I NEED HELP ASAP
Answer:
The gametophytes grow directly from the sporophyte - third choice
Answer:
The correct answer is The gametophytes grow directly from the sporophyte.
Explanation:
Conifers are a group of plants that belong to what is called Pinophyta.
They abound in quantity in cold areas although many different types of this plant can also be found in tropical areas.
They are formed by live gemnosperm plants, this means that their seeds do not form in closed cavities but are "naked". These seeds are evergreen, this means that their leaves will not fall throughout the year and usually live for more than two years or produce other seeds again.
Gametophytes are haploid plants that are usually located in or below the soil and are responsible for producing gametes.
These grow directly from the sporophyte, which is the phase in which a plant reproduces by spores.
So we can say that the correct answer is The gametophytes grow directly from the sporophyte.
What was the purpose of mendel’s experiments with dihybrid crosses
Final answer:
Mendel's experiments with dihybrid crosses were conducted to test the hypothesis of independent assortment. He crossed pea plants with different pairs of traits to determine if these traits are inherited together or independently. The results showed that traits segregate independently during sex cell division, leading to Mendel's law of independent assortment.
Explanation:
Mendel's experiments with dihybrid crosses had the purpose of testing the hypothesis of independent assortment. By crossing pea plants with different pairs of traits, such as yellow round seeds and green wrinkled seeds, Mendel was able to determine if these traits were inherited together or independently.
The results of his dihybrid crosses showed that traits segregate independently during sex cell division. This led to the formulation of Mendel's second law of inheritance, known as the law of independent assortment.