Bacterial spores can survive long periods of time in heat, dehydration, and cold because of their:
(a) special enzymes (b) large amounts of DNA (c) specialized cytoplasm (d) thick cell wall.

In guinea pigs, black fur (b) is dominant over white fur (b). cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. complete a punnett square, identify the genotype(s), phenotype(s), and probability (% and fraction) that the offspring will be black and white?