In tomato plants, the allele for purple stem (PPP) is dominant to the allele for green stem (ppp). Two heterozygous purple-stemmed plants (PpPpPp) are crossed. The table below shows the number of offspring of each phenotype produced from this cross:
| Phenotype | Number of offspring |
|---|---|
| Purple stem | 1341 |
| Green stem | 447 |
Calculate the number of these offspring that is most likely to be heterozygous.
66 exam-style questions on Edexcel IGCSE Biology Inheritance. Each one has a worked solution and a mark scheme showing where the marks go.