A mutation in a gene may not always result in a change of the expression of that gene. What advantage does this provide to the cells of the organism?

Amutagen is 1: a living thing that has undergone a mutation. 2: an agent that causes a mutation in dna. 3: a mutation that has affected one gene. 4: a chemical that can poison living cells.

What’s this animal (picture is tagged) and where is it most likely to live, rainforest or desert?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?