When do the sister chromatids line up at the equator of the cell?
a. metaphase
b. anaphase
c. prophase
d. telophase

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