Acell biologist found that two different proteins with largely different structures were translated from two different mrnas. these mrnas, however, were transcribed from the same gene in the cell nucleus. what mechanism that follows could best account for this?

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?

What are two reasons for why a species might disappear from the fossil record?

How do cells grow and reproduce to maintain homeostasis?