You have discovered a new bird. Molecular analysis reveals that breast feather color is controlled by a single gene with two alleles that segregate during meiosis. Breeding experiments, however, reveal a range of phenotypes resulting from each of the three genotypes that can occur. You are confused by this result until you remember that the relationship between genotype and phenotype can be complicated by the influence of the

a. parents.

b. epistasis.

c. environment.

d. additive genetic variation.

e. None of the above

What do animals wth echolocation have in common other than echolocation

What is the phylum of soft bodied animals with a true bosy cavity and a three part body consisting of a foot visceral mass and a mantle

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)