Circle the letter of the correct choice. 1. All of the individuals of a single species that occur together at a given place and
time are members of the same
a. community
b. population
c. ecosystem
d. niche

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Dna replication or repair occurs in a cell in all of thw following situations except when

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.