Biology A (Salters-Nuffield) A-Level
Block to polyspermy
What Block to polyspermy means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Block to polyspermy
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Reference: Pearson Edexcel
The released contents harden the zona pellucida and destroy sperm-binding receptors so no second sperm can enter.
Topics that use Block to polyspermy
- 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 Block to polyspermy in the exam
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