13. the function of mrna is to

a. carry genetic information from the nucleus to the site of protein synthesis.
b. begin the "unzipping" of the dna molecule.
c. maintain homeostasis within the cell during mitosis.
d. direct the movement of centrosomes during meiosis.
e. translate genetic code into dna before meiosis.

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule