GCSE Science - B1 - Inheritance and Genetic Diagrams

GCSE Science - B1 - Inheritance and Genetic Diagrams

1. Punnett Squares

   • diagram on the right shows all the possibilities of genotypes the offspring may have
     • each allele the mother and father have are written in one square each
       • pairing them up them tells you the possibilities and the chance of each one

2. 25% chance of the offspring having cystic fibrosis

   • This is because the F is more dominant than the f. There is only 1/4 ff so there is a 25% chance of a child having CF

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