Cats have a gene that codes for the color of their fur.
suppose that a certain breed of cat can have black, gray, or white fur. black fur is dominant, white fur is recessive, and gray fur is intermediate (i. e., cats with gray fur possess one allele for black fur and one for white fur).
if a gray cat and a white cat have kittens, what phenotypes could the kittens exhibit?
a) gray or white fur
b) only gray fur
c) black or white fur
d) black, gray, or white fur

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)