The last one is right answer i think
Correct answer: A) bio-geographic isolation affects the random changes that take place within gene pools
The bio-geographic isolation of the species takes place when the geographical barrier work as a distinguishing agent. It takes place when the group of animals, plants and other creatures are not allowed to mate with each other.
The mixing of there genes within the same species is separated by the geographical barrier.
The barrier allows the mating of the species in a different way as compared to the previous one.
veins carry deoxygenated blood back to the heart.
Answer:
-The posterior pituitary does not secrete its hormones but acts as an extension of the hypothalamus, storing those hormones.
-The anterior pituitary secretes its hormones (predominantly tropic hormones).
Explanation: