In a species of moth, wing colour is controlled by a single gene. The allele G G\,G for green wings is dominant to the allele g g\,g for grey wings.
A green-winged moth has one grey-winged parent. The green-winged moth mates with a grey-winged moth.
The inheritance of wing colour by each offspring is independent.
The pair produces four offspring.
What is the probability that at least one offspring is green-winged and at least one offspring is grey-winged?
116\frac{1}{16}161
38\frac{3}{8}83
78\frac{7}{8}87
1516\frac{15}{16}1615
62 exam-style questions on AQA GCSE Biology 6.1 Reproduction, covering 6.1.1 Sexual and asexual reproduction, 6.1.2 Meiosis, 6.1.3 Advantages and disadvantages of sexual and asexual reproduction, 6.1.4 DNA and the genome, 6.1.5 DNA structure, 6.1.6 Genetic inheritance, 6.1.7 Inherited disorders, and 6.1.8 Sex determination. Each one has a worked solution and a mark scheme showing where the marks go.