Assuming that the n-terminal ends of polypeptides were never removed, what would be the first (n-terminal) amino acid in every polypeptide?

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species

The image shows a group of fish. the type of social behavior shown in the image is called

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to