Natural selection depends on which of the following?
SEK
(A) Variation within the population.
B
Geographic separation of the two parts of a population.
(C
Catastrophic destruction of most members of the population.
(D
Migration of large numbers out of the population.

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.