Imagine a change in the iguana's habitat from dry land to aquatic. based on the generation i allelic frequencies, we can assume only a small percentage of iguanas had webbed feet and were able to survive. over many generations, if their habitat remains aquatic, iguanas without webbed feet will disappear from this population. predict what should happen to the allelic frequencies within the iguana population over time.

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.