Mr. Adams' Washburn Site
Topic 10.3: Gene pools and Speciation.
A gene pool consists of all the genes, and their different alleles, present in an interbreeding population.
Evolution required that allele frequencies change with time in populations.
Reproductive isolation of populations can be temporal, behavioral or geographic.
Speciation due to divergence of isolated populations can be gradual.
Speciation can occur abruptly.
Identifying examples of directional, stabilizing and disruptive selection.
Speciation in the genus Allium by polyploidy.
Comparison of allele frequencies of geographically isolated populations.
Nature of Science
Looking for patterns, trends and discrepancies- patterns of chromosome number in some genera can be explained by speciation due to polyploidy.
Helpful Links & Articles
LIzard Evolution Lab 1/
Chromsome vs chromatid video
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