Question

genetic variation is the source for evolution. without a variety of phenotypes, there would be no differential survival upon which natural selection can act. which of these are sources of the genetic variation within a population? select all that apply. a errors caused by dna polymerase during replication. b the failure of dna to separate during dna replication c changes to the ribosomal structure during translation d induced changes to the genome from environmental factors e fertilization of two haploid gametes during sexual reproduction.

Explanation:

Genetic variation sources include:

• A: DNA polymerase errors cause mutations (genetic changes).
• D: Environmental factors (mutagens) induce genome changes.
• E: Fertilization combines unique gametes, increasing variation.

B (DNA separation failure in replication) is not a source of variation; C (ribosomal structure changes) affects translation, not genetic material.

Answer:

A. Errors caused by DNA polymerase during replication, D. Induced changes to the genome from environmental factors, E. Fertilization of two haploid gametes during sexual reproduction.