Is it possible to transplant a pigs heart to a human?

Describe five factors that influence the value of fuel

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

What processes take place before the mature mrna exits the nucleus?