If we follow a population through time and observe that allele frequencies change or genotypic frequencies change in this population, this may be because . a. the population size is small. b. mutations have occured c. selection is operating on the locus. d. Any of the other answers could be a possible reason.

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?

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?