Chapter 15 / 6 short lessons
Evolution, species and phylogeny
Explain population change and use evidence to reconstruct branching relationships.
H2 Biology / 9477 / 2027 syllabus
What do you think?
A tree's branches are rotated around a node. What changes?
Lessons
0 of 6 marked as readSelection changes populations
Explain variation, selection pressures and population-level evolution.
About 7 minFrom small changes to branching lineages
Explain descent with modification and connect changes across evolutionary scales.
About 6 minUse independent evidence of ancestry
Explain molecular/anatomical homology, fossils and Wallace's biogeography.
About 7 minSpecies and reproductive isolation
Explain the biological species concept, its limits and allopatric/sympatric speciation.
About 8 minRead relationships from a tree
Explain classification and interpret phylogeny using common ancestry.
About 6 minCompare aligned sequences
Explain genome sequences and multiple sequence alignment in classification.
About 7 minWhat you will be able to do
- Build a natural-selection explanation.
- Evaluate ancestry evidence and speciation.
- Read trees and aligned molecular sequences.