Biology GCSE
Punnett squares
What Punnett squares means in Biology GCSE, as defined for OCR.
Definitions of Punnett squares
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Reference: OCR
Visual matrices used to model the random segregation and combination of alleles during sexual reproduction.
A way of modelling a genetic cross, such as XX crossed with XY, to show the resulting genotypes.
Used to determine the probability of an offspring inheriting a specific genotype or phenotype.
Topics that use Punnett squares
- Inheritance (OCR GCSE)
Related terms
- Asexual reproduction
- carrier identification
- chromosomes
- continuous variation
- data interpretation
- direct proportion
- discontinuous variation
- DNA
Using Punnett squares in the exam
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