What is the difference between an embryo and a fetus?

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?

Which organelle plays a role in intracellular digestion?

When are the centromeres broken in meiosis?