Shark skin denticles prevent the growth of

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 are 3 reasons that natural selection occurs

In the diagram below, which organelle is a ribosome, which combines amino acids and produces proteins? оооо