The union of the egg and sperm cell is called Combination Fertillzation Mitosis

In order to clone adult animals, scientists typically begin with a(n)

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.