Label the following genotypes with the possible phenotypes. (Purple skin is dominant to blue skin.)
PP
Pp
pp

List two limitations of natural selection

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different