Which of the following is an example of a beneficial mutation?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

What drives the atp synthase reactions that produce atp