Answer:
The neutral theory
Explanation:
The neutral theory of molecular evolution explains that most evolutionary changes occur at the molecular level. The neutral theory of molecular selection infers that the variations which arise between different species and in between species occur due to genetic drift and mutant alleles.
Hence, the segregation of the 20 different alleles in a sample of 50 individuals arises because of the neutral theory.
C. unicellular, most protists are unicellular
most of a atoms mass is in the nucleus of the atom:) hope this helps you
Answer: protects the external structure of the cell
Explanation: the cell membrane is a protein envelope that is wrapped around the cell. Both the animal and plant cell (including other microorganisms) have it.