Kin selection refers to: a. nonaltruistic behavior toward other members of the kin group. b. altruistic behavior that promotes kin-like bonding among nonkin. c. altruistic behavior that increases only the donor’s inclusive fitness. d. altruistic behavior that increases the donor’s inclusive fitness and that of the donor’s relatives.

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.