A mutagen is a living thing that has undergone a mutation.
an agent that causes a mutation in DNA.
a mutation that has affected one gene.
any chemical that can poison living cells.

Modern whales developed their traits through natural selection what occurs during the process of natural selection

You see a white marker with an orange circle and black lettering. what does this marker tell you

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.