Afarmer sprays insecticide on his crops to kill unwanted insects. most of the insects die, and the chemicals have the effect of damaging the dna of the insects that are not killed. which of these happened? (1 point)
a: sexual selection among the insects has changed the gene pool.
b: genetic equilibrium has been maintained.
c: mutations have arisen that may have altered allele frequencies.
d: individuals with new genes have immigrated into the population.

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.