Biology A-Level
Restoration at fertilisation
What Restoration at fertilisation means in Biology A-Level, as defined for OCR.
Definition of Restoration at fertilisation
Check what you remember
Read the wording for your board, then hide it and explain Restoration at fertilisation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Fusion of two haploid gametes at fertilisation restores the diploid number, keeping chromosome number constant between generations.
Topics that use Restoration at fertilisation
- Cell division, cell diversity and cellular organisation (OCR A-Level)
Related terms
- anaphase
- Asexual reproduction and cloning
- Checkpoint control mechanisms
- Chromosome behaviour during division
- Consequences of loss of cell-cycle control
- Cyclins and cyclin-dependent kinases
- differentiation
- DNA replication in S phase
Using Restoration at fertilisation in the exam
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