Punnett and Bateson knew that in sexual reproduction both parents contribute a gamete to the offspring, but some of their traits disappeared in one generation only to reappear in a later generation.

Complete this Punnett square to show the allele combinations of the possible offspring produced. b. Calculate the probability that an offspring will have the combination DD.

Genetic inheritance - AQA How to construct Punnett squares - Higher. ... Work out the new possible genetic combinations inside the Punnett square. Use this to answer the question.