Question 1
Natural selection operates to produce changes in
◦ individuals.
◦ populations.
◦ races.
◦ phyla.
◦ animals only.
Question 2
New alleles that appear by mutation
◦ are inherently disadvantageous to their bearers.
◦ are seldom advantageous or disadvantageous in themselves.
◦ either have or lack survival value only in the context of their environment.
◦ are seldom advantageous or disadvantageous in themselves and either have or lack survival value only in the context of their environment.
◦ are inherently disadvantageous to their bearers and are seldom advantageous or disadvantageous in themselves.