Summer squash color is determined by the interaction of more…

Summer squash color is determined by the interaction of more than one gene. The presence of CC or Cc allele combinations produces a squash that is white in color, and the C allele is epistatic to the G allele. The presence of GG or Gg produces a squash that is yellow in color and ccgg produces a squash that is green. After two heterozygous squash are crossed, one of the offspring is ccGg. What is the color of the offspring squash?

Multiple crosses were made between true-breeding lines of bl…

Multiple crosses were made between true-breeding lines of black and yellow Labrador retrievers. All the F1 progeny were black. When these progenies were intercrossed, they produced an F2 generation consisting of 91 black, 39 yellow, and 30 chocolate (brown) dogs. How many gene products (dominant alleles) are required to produce black fur?