Answer:
considering the way the question is phrased, the answer should be B
I can answer the question but you need to tell me what e and E stand for.
Explanation:
if e stands for attached and E stands for detached then your answer is 2
hope this helped! ;D
Some examples could be Giraffes with long necks and the darkening of London's peppered moths after the industrial revolution. Direct selection is the shift of the population of one species towards a certain phenotype. -reference.com
No lo se pero buen día ciela pásala rico
Thin coat , becaus eit protects from temperature
Answer:
Because natural selection selects for it. Thus it persists.
Explanation:
You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.
