Describe pioneer species. what types of environments do they like?

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

Which codon is the code for the amino acid histidine (his)?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion