What is the function of the repressor in the e. coli lac operon?

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

Acommon kind of mechanical weathering is called

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.