Restriction enzymes are collected from what

How do antiviral drugs work? in your own words.

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

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?