IB Biology Topic D4.1: Natural Selection Notes

D4.1.1 Natural selection as the mechanism driving evolutionary change

7 minute read

D4.1.2 Roles of mutation and sexual reproduction

4 minute read

D4.1.3 Overproduction of offspring and competition for resources

5 minute read

D4.1.4 Abiotic factors as selection pressures

4 minute read

D4.1.5 Differences between individuals in adaptation, survival and reproduction

3 minute read

D4.1.6 Requirement that traits are heritable for evolutionary change to occur

4 minute read

D4.1.7 Sexual selection as a selection pressure in animal species

5 minute read

D4.1.8 Modelling of sexual and natural selection

4 minute read

D4.1.9 Concept of the gene pool (HL)

3 minute read

D4.1.10 Allele frequencies of geographically isolated populations (HL)

6 minute read

D4.1.11 Changes in allele frequency in the gene pool (HL)

5 minute read

D4.1.12 Differences between directional, disruptive and stabilizing selection (HL)

4 minute read

D4.1.13 Hardy–Weinberg equation and calculations of allele or genotype frequencies (HL)

4 minute read

D4.1.14 Hardy–Weinberg conditions (HL)

3 minute read

D4.1.15 Artificial selection by deliberate choice of traits (HL)

4 minute read