What determines the sex of an organism? a. the number of sex cells it produces b. the kind of sex cells it produces c. the kind of sex chromosomes it receives d. the number of sex chromosomes it receives

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?

The cluster of developing cells from conception until birth is called an

Explain how scientists use geologic time to determine the age of landforms.