Which is used to make many copies of DNA? O A. Gel electrophoresis
B. PCR
O c. Nuclear transfer
O D. Reverse transcriptase

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Name the glands associated with human digestive system