Answer:
Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.
Explanation:
The property of DNA which causes it to migrate to the positive pole of the electrophoresis apparatus is B. the negative charge of the DNA.
It acts just like a magnet - positive and negative forces attract.
The amswer on which us population is currently exp. a mental disorder id D. 35 %