All the information necessary for growth,
development, and eventual reproduction of
sexually reproducing organisms is present in
(1) sperm cells, only
(2) egg cells, only
(3) zygotes
(4) either sperm cells or egg cells

What are two reasons for why a species might disappear from the fossil record?

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Why is it important that fibrin is insoluble in water?