Have the longest evolutionary history of the major animal groups living today.

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

When sodium chloride dissolves in water the sodium cholride dissociates into?

What name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna?