Sexual Reproduction in Eukaryotes Increases Genetic Variation

Sexual reproduction in eukaryotes increases genetic variation. In prokaryotes, transformation, transduction, and conjugation are mechanisms that increase genetic variation. A fundamental difference between the generation of genetic variation in the two domains is ________.

A) eukaryotes are able to generate mutations in response to environmental stress while prokaryotes only generate random variation
B) eukaryotic variation occurs primarily within a single generation while prokaryotic variation occurs over many generations
C) crossing over is a major mechanism in creating genetic variation in prokaryotes while independent assortment is a major mechanism in eukaryotes
D) eukaryotic genetic variation occurs when adults transmit genes to their offspring while prokaryotic genetic variation occurs with horizontal gene transfer