The wall of which of the following is thick and elastic. Single choice. Vein

Arteries

Capillaries

Which type of neuroglia is found outside of the brain?

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

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain