A species of frog reproduces sexually. Each body cell of this species contains 26 chromosomes.
Give the number of chromosomes in one gamete of this frog species.
Explain how fertilisation produces a zygote with 26 chromosomes in this frog species.
Egg cells from one female frog are fertilised by sperm cells from one male frog. The young frogs show differences in inherited characteristics.
Explain how meiosis and fertilisation cause these differences.
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.