Biology A (Salters-Nuffield) A-Level
Crossing over
What Crossing over means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Crossing over
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Reference: Pearson Edexcel
The exchange of corresponding segments of alleles between non-sister chromatids of a homologous pair at chiasmata.
Topics that use Crossing over
- Topic 3: Voice of the Genome (Pearson Edexcel A-Level)
Related terms
- Acrosome
- Acrosome reaction
- Cell cycle and interphase
- Continuous variation and normal distribution
- Cortical reaction
- Differential gene expression
- DNA methylation
- DNA replication and sister chromatids
Using Crossing over in the exam
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