A species has 30 chromosomes in each diploid cell. A student suggests that its normal gametes contain 30 chromosomes.
If two such gametes fused, how would the zygote compare with a normal zygote?
60 chromosomes, twice the normal number
30 chromosomes, exactly the normal number
15 chromosomes, half the normal number
90 chromosomes, three times normal number
40 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.