Biology › Evolution and speciation

Evolution and speciation

Canonical unit B19

• Natural selection: what varies, what is selected, and what actually changes
  The three sources of genetic variation and which of them makes new alleles, environmental variation and why it is not in…
• Resistance, drift and the evidence: selection where you can watch it happen
  How antibiotic resistance arises and spreads, vertical and horizontal gene transfer, why a prescribed course is finished…
• Speciation: how one gene pool becomes two, and why the line is genuinely fuzzy
  The biological species concept and the cases it cannot handle, reproductive isolation and gene flow, allopatric speciati…