In a species of freshwater fish, a cell in an ovary has 48 chromosomes. This cell divides by meiosis to produce an egg cell with 24 chromosomes. The nucleus of the egg cell later fuses with the nucleus of a male gamete. The first cell of the offspring has 48 chromosomes.
Which sequence describes the chromosome sets of the cell in the ovary, the egg cell and the first cell of the offspring, in that order?
diploid, then haploid, then diploid
haploid, then diploid, then diploid
diploid, then diploid, then haploid
haploid, then haploid, then diploid
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.