Question: In guinea pigs, black vs. albino is due to alleles of one gene, with the allele for black being dominant to that for albinism. Castle and Phillips (Science 30: 312,1909) replaced the ovaries of an albino female with those from a homozygous black female. The female was then mated with an albino male and produced two black offspring. Are these results expected on the basis of Mendelian inheritance? Explain.