A scientist had two substances. One was a yellow liquid. The other was a colorless liquid. The scientist added a few drops of the yellow liquid to the colorless liquid. A red solid formed.

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?