IB biology - A4.1 Evolution and speciation

Syllabus

Standard level

• A4.1.1 Evolution as change in the heritable characteristics of a population
• A4.1.2 Evidence for evolution from base sequences in DNA or RNA and amino acid sequences in proteins
• A4.1.3 Evidence for evolution from selective breeding of domesticated animals and crop plants
• A4.1.4 Evidence for evolution from homologous structures
• A4.1.5 Convergent evolution as the origin of analogous structures
• A4.1.6 Speciation by splitting of pre-existing species
• A4.1.7 Roles of reproductive isolation and differential selection in speciation

Additional higher level

• A4.1.8 Differences and similarities between sympatric and allopatric speciation
• A4.1.9 Adaptive radiation
• A4.1.10 Barriers to hybridization and sterility of interspecific hybrids as mechanisms for preventing the mixing of alleles between species
• A4.1.11 Abrupt speciation in plants by hybridization and polyploidy

Slides