Apopulation of black cats has been interbreeding. however, in one litter, a sole gray kitten is born. the successive generations now have a few gray cats. which mechanism is responsible for introducing this new allele in the cat population?

gene selection

gene mutation

gene flow

genetic drift

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons