What is mrna?
need it asap 20 points if answered

Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

What kinds of molecules can pass through the cell membrane without any problem?