Explain how you would use any of the following materials to show how the movement of plates can cause a mountain range to form. (Sand, cardboard, modeling clay, towel) ANSWER:

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?