If a mutation is removed from a population due to either genetic drift or natural selection, it is said to be:

A) negatively adapted.
B) maintained.
C) fixed.
D) extinct.
E) controlled.

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?