Modern humans first appeared during the

a. most recent period of the cenozoic era.
b. most recent period of the mesozoic era.
c. earliest period of the cenozoic era.
d. earliest period of the mesozoic era.

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

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms

What is the process by which biological parents pass traits such as hair type or eye color to their children