Biology A-Level
common ancestry
What common ancestry means in Biology A-Level, as defined for AQA.
Definitions of common ancestry
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Reference: AQA
The idea supported by shared biochemistry, including the universal use of DNA, RNA and ATP, that living things descend from a common ancestor.
The relationship shown by a phylogenetic tree, to which the split is related.
Topics that use common ancestry
- Evolution may lead to speciation (A-level only) (AQA A-Level)
- Monomers and polymers (AQA A-Level)
Related terms
- allele frequency change
- allopatric speciation
- alternate monomers rotated 180 degrees
- amino acids
- causes of change
- competition for resources
- condensation
- continuous variation
Using common ancestry in the exam
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