Which statement correctly explains how recombination increases genetic variation? a. During prophase of mitosis, chromosomes exhibit crossing over by exchanging genes from one homologous chromosome to another.
b. During meiosis I, paired replicated homologous chromosomes line up along the center of the cell.
c. A parent has 2 alleles for a trait and these alleles are inherited separately.
d. After cytokinesis, sister chromatids exchange genetic information.

Clara wrote the following hypothesis for an experiment about acidophilic bacteria. bacteria cells will stop dividing in a basic (alkaline) environment because of the high ph. which statement is the best way to restate the hypothesis so that it is more specific? growing acidophilic bacteria in some environments will cause the cells to stop dividing because of ph. if the ph of their environment is changed, acidophilic bacterial cell division will be affected. if the environment of acidophilic bacterial cells becomes alkaline, the bacteria will stop dividing. the more alkaline an environment, the less cell division will occur in bacteria.