What is true of all matter? a. it is made of nitrogen and carbon. b. it is found in the human body. c. it takes up space and has mass. d. it is a liquid or gas.

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?