A population of snails is experiencing disruptive selection in terms of their shell patterns. Which statement is most likely true about the population? Two different shell patterns are increasing in frequency, while the most common pattern is decreasing. The frequency of the most common shell pattern is becoming higher than all other patterns. The frequency of a new shell pattern is becoming higher than all other patterns. Two different patterns are combining into one very common pattern.
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Answer;
Two different shell patterns are increasing in frequency, while the most common pattern is decreasing(CA).
The statement that is most likely true about the population is that two different shell patterns are increasing in frequency, while most common pattern is decreasing.
Explanation;
Disruptive selection involves changes in population genetics such that the extreme values of a trait are favored over the intermediate values.
Disruptive selection often drives speciation.
It may also occur when environmental changes favor individuals on either end of the phenotypic spectrum.
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100 percent
50 percent
25 percent
If a white horse and a black horse are bred together, what percentage of the offspring will be roan and express both colors in their hair?1 point)
100 percent
0 percent
25 percent
50 percent
Answers
The dominant traits are those that are expressed phenotypically, whereas recessive traits are masked by the dominant traits.
- The percent of offspring having dimples are 50 percent.
- The percent of offspring will be roan and expressing both the colors will be 100%.
The dimples are the traits, which are expressed phenotypically.
Let the alleles for the heterozygous parent with dimples be Dd. The other parent not having dimples will have the genotype dd.
The combination between the Dd and dd will result in:
Dd, Dd - heterozygous combination of alleles
dd, dd - purebred for the alleles
Similarly, the genotype of the hair color of the horse is white and black .
The cross between the parental genotype will result in 100% heterozygous offspring with genotype
The result will be due to codominance, in which both the characters of the parent will be expressed in the offspring such that the horse will have black and white colors.
Therefore, the answers will be 50% and 100%.
To know more about the cross, refer to the following link:
Answer:
1) 50 percent
2) 50 percent
Explanation:
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Answer:
Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste. That is why the cell needs to be small. The smaller it is, the larger the surface area to volume ratio is. ... This is why cells are so small.
explicación:
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. ... That is why cells are so small.
Cells are small to have a high surface-to-volume ratio and efficient exchange of materials with their environment.
All cells are very small because they need to have a high surface-to-volume ratio. The surface area of a cell determines the amount of substances that can enter or leave the cell, while the volume of the cell determines the amount of metabolic activity that can occur. By being small, cells can efficiently exchange materials with their environment and carry out essential functions.
For example, red blood cells are small to pass through the narrowest capillaries and transport oxygen to different parts of the body. Bacteria are also small to facilitate their nutrientuptake and waste removal.
Furthermore, the small size of cells allows them to have a faster rate of diffusion, which is important for the exchange of gases, nutrients, and waste products across the cell membrane.
Learn more about Cell Size here:
#SPJ3
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The correct answer is true.
b. the germ theory of disease.
c. a theory of electricity ..D.the theory of evolution
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Louis Pasteur proposed that some diseases are caused by germs in the XIX century.
The concept of atomic weight was proposed by John Dalton. Benjamin Franklin proposed a simple theory of electricity, which was later compounded by Charles du Fay. The theory of evolution was proposed by Charles Darwin.
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Hope this helps!
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in the desert, there aren't as many roots to keep the sand/soil from moving so when it rains, te soil is free to move, it moves much more than in a forest or on a mountain.
There is a lack of vegetation to hold the soil in place.