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Topic 10.3:  Gene pools and Speciation.

Understandings:
  • 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.
Applications:
  • Identifying examples of directional, stabilizing and disruptive selection.
  • Speciation in the genus Allium by polyploidy.​
Skills
  • 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.​
Powerpoints
ahl_10.3.pptx
File Size: 9555 kb
File Type: pptx
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Homeworks
ahl_chap_10_rev_sheet.docx
File Size: 29 kb
File Type: docx
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ahlhmwk10.3.docx
File Size: 369 kb
File Type: docx
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hl_genetics_review.pdf
File Size: 1446 kb
File Type: pdf
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Helpful Links & Articles
LIzard Evolution Lab 1/8
Chromsome vs chromatid video
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