There exists a population in which there are three distinct versions of the gene a (a1, a2, and a3). originally, each version was present in equal numbers of individuals. which version of the gene an individual carries has no measurable effect on its reproductive success. as you follow the population over a number of generations, you find that the frequency of a1 and a3 drop to 0%. what is the most likely explanation?

For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls