What is represented at the tips of branches in a phylogeny?

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?

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .