If a plant has 18 chromosomes how many would be present in each of its gametes

Eristics do scientists use to distinguish between organisms in different kingdoms

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

Name the organs of humanelemintary canal.