A researcher studies a zygote formed when a gamete from species A fuses with a gamete from species B. The table shows the number of chromosomes in a diploid cell of each animal species.
| Species | Number of chromosomes in a diploid cell |
|---|---|
| Species A | 38 |
| Species B | 40 |
Calculate the number of chromosomes in the zygote.
Show your working.
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.