In the lock-and-key model of enzyme action, the fits into of the enzyme. a. product, substrate b. active site, product c. substrate, active site d. active site, substrate

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?