Punnett Square
Biology: Edexcel IGCSE, topic 4.3.4
Punnett Squares
Punnett squares are diagrams that help us to visualise the outcome of a monohybrid cross. In these diagrams, a capital letter shows a dominant allele.
Test yourself on Punnett Square
What is the probability (%) of a dominant phenotype in the offspring of parents with genes GG and gg?