4. What best describes the role of mutations in evolution? a. Mutations are not necessary for evolution because they are not herita

b. Mutations are useful for evolution to occur because they promote ger

uniformity within a population.

c. Mutations are essential for evolution to occur because they produce

variations within a population.

d. Mutations are essential for evolution to occur because they are respo

environmental changes.

option C.

Mutations are essential for evolution to occur because they produce variations within a population.

Explanation:

This is because Mutation refer to change in the genetic content or DNA composition of organisms. Therefore , for evolution to occur there must be Mutation because it is the main source of genetic variation or causes genetic variation needed for evolution.

Mutation is important as the basics of evolution because it produce a new DNA sequence for a gene function, which lead to the formation of new allele.

a. to encourage apoptosis

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus