Which factor presents the greatest threat to biodiversity?

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?

Why do you suppose the structural polysaccharide cellulose does not contain branches?

By going through the process of cellular respiration the cell can gain molecules of atp.