13.Which statement best explains how there can be orange and yellow butterflies of the same species? A. The orange butterflies receive two copies of the gene for color.
B. The yellow butterflies only receive one copy of the gene for color.
C. The butterflies choose to express their identical alleles differently.
D. The butterflies receive different alleles that determine their color.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What was the land like over 500 million years ago? what was under the sea?

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim