Answer:
A
Explanation:
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According to Darwin's theory of natural selection, struggle for existence leads to survival of the fittest that means natural selection only tends to favour those organisms that are most fit to survive with the reproductive age in a particular environment and to produce offspring.
Those organisms which fail to adapt to acclimatization are likely to become extinct because they won't be able to survive in the changing environment.
<h3>
What is acclimatization?</h3>
Acclimatization is refers to the process where an individual organism adjusts to a change in its environment, allowing it to maintain fitness across a different of environmental conditions.
An example of Darwin theory is if dogs which have a good sense of smell are fit to survive than dogs without a good sense of smell, then all dogs have to evolve a good sense of smell because those with a bad sense of smell die out.
For more information regarding natural selection, refer:
brainly.com/question/427282
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The kind of cross that the figure describes is a dihybrid cross.
There are different types of cross. In this case, we have a dihybrid one.
<h3>What is a dihybrid cross?</h3>
A dihybrid cross happens between two individuals, animals, or plants with two different pairs of genes.
In this case, the two sets of genes that crossed are:
<h3>Parent 1 gene pairs</h3>
- The h0m0zygous dominant RR
- The h0m0zygous dominant YY
The result is RY.
<h3 /><h3>Parent 2 gene pairs</h3>The h0mzygous recessive rr
- The h0mzygous recessive yy
The result is ry.
As a result, the cross is a dihybrid one because RY and ry, which are two heterozygous pairs that code for different traits, crossed.
RY x ry
Learn more about dihybrid and monohybrid cross here:
brainly.com/question/1185199
Answer:
D. The nucleus regulates all cellular activity
Say B is the genotype for example. If her whole family is attached, then she would be Homozygous Dominant. For example, BB.