In a horse, one chromosome of a pair carries allele H and the other carries allele h. Before fertilisation, sperm cell P from this horse contains 32 chromosomes and allele H. Sperm cell Q also contains 32 chromosomes. A student concludes that sperm cell Q must also contain allele H.
Which statement corrects this conclusion?
Q could carry allele h, because each sperm cell receives one chromosome of the pair and which one varies
Q must carry allele h, because no two sperm cells from the same horse carry the same allele
Q could carry neither allele, because each sperm cell receives only half of each chromosome in the pair
Q could carry both H and h, because each sperm cell receives both chromosomes of the pair
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.