A fish sperm cell contains 30 chromosomes. A cell in the male's reproductive organs completes meiosis. One resulting sperm fertilises an egg from the same species. The fertilised egg then divides by mitosis.
Which option gives the number of sperm cells produced by this one meiosis and the number of chromosomes in each cell after the first mitotic division?
Four sperm cells; 60 chromosomes in each embryo cell.
Two sperm cells; 60 chromosomes in each embryo cell.
Four sperm cells; 30 chromosomes in each embryo cell.
Two sperm cells; 30 chromosomes in each embryo cell.
76 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.