Two samples of human body cells have divided by mitosis. One sample contains 6 nuclei from a female and the other contains 5 nuclei from a male. All divisions occurred normally.
Calculate the total number of X chromosomes across the nuclei in both samples and state how many of these X chromosomes came from each parent.
62 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.