Biology A (Salters-Nuffield) A-Level
Cortical reaction
What Cortical reaction means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Cortical reaction
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Reference: Pearson Edexcel
Triggered by sperm-oocyte membrane fusion, cortical granules fuse with the oocyte membrane and release their contents into the zona pellucida.
Topics that use Cortical reaction
- Topic 3: Voice of the Genome (Pearson Edexcel A-Level)
Related terms
- Acrosome
- Acrosome reaction
- Cell cycle and interphase
- Continuous variation and normal distribution
- Differential gene expression
- DNA methylation
- DNA replication and sister chromatids
- Epigenetic changes
Using Cortical reaction in the exam
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