A moth reproduces sexually. A researcher records whether each cell has one complete set of chromosomes or two complete sets. A cell with two sets produces sperm by meiosis. One of these sperm then fuses with an egg from the same species to form a fertilised cell.
How should the researcher record the sperm and the fertilised cell?
The sperm has one chromosome set and the fertilised cell has two chromosome sets.
The sperm has two chromosome sets and the fertilised cell has one chromosome set.
The sperm has one chromosome set and the fertilised cell has one chromosome set.
The sperm has two chromosome sets and the fertilised cell has two chromosome sets.
92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.