How many stars do we have in OUR solar system?

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

Construct at least two possible hypotheses for the student’s experiment.

This rapid change in species that rarely leaves behind fossil evidence is referred to as