If a woman has both alleles in her body cells, what will her eggs contain?

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of