In pea plants, round seeds (R) are dominant to wrinkled seeds (1), and yellow seed color (Y) is dominant to green seed color (y).
The gene for seed shape and the gene for seed color follow the law of independent assortment and are not sex-linked. In a cross
between two RrYy parents, predict the fraction of offspring with round, yellow seeds.

A. 1/2
B. 3/4
C. 9/16
D. 15/16

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.