1. What is the correct relationship between an allele and a gene?
A. Alleles dictate which genes go into offspring.
B. Alleles are the alternative forms a gene can take.
C. Genes are the physical form of allele combinations.
D. Combinations of dominant genes result in an allele.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.