Natalie has noticed that when her dog had puppies, the puppies looked very different from the mother and from each other. This was due to natural genetic variation. Which of the following describes how genetic variation contributes to evolution? A Genetic variation within a population means that all organisms will be better suited for survival.
B Genetic variation results in offspring only receiving from their parents’ helpful characteristics.
C Genetic variation increases the ability of a species to survive environmental changes.
D Genetic variation results in a higher number of offspring produced in each generation.

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.