In a plant, purple flowers are dominant to white flowers. Two purple-flowered plants are crossed. A large number of offspring are produced.
Table
| Phenotype | Number of offspring |
|---|---|
| Purple flowers | 612 |
| White flowers | 188 |
How many fewer white-flowered offspring were observed than expected from the most likely parental genotypes?
242424
200200200
424424424
121212
43 exam-style questions on Edexcel GCSE Biology 3.3 Inheritance, covering 3.3.1 Gregor Mendel and the basis of genetics, 3.3.2 Alleles and inherited characteristics, 3.3.3 Monohybrid inheritance, 3.3.4 Determination of sex at fertilisation, 3.3.5 Outcomes from monohybrid crosses, 3.3.6 Inheritance of ABO blood groups, 3.3.7 Inheritance of sex-linked disorders, and 3.3.8 Multiple genes and phenotypic features. Each one has a worked solution and a mark scheme showing where the marks go.