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5.1 Inheritance

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Question 12

A domestic cat (Felis catus) has 2n=382n = 382n=38 chromosomes in each of its somatic cells.

Following meiosis in a healthy male cat, how many autosomes and how many sex chromosomes are present in a single functional sperm cell?

A

36 autosomes and 2 sex chromosomes

B

18 autosomes and 1 sex chromosome

C

17 autosomes and 2 sex chromosomes

D

37 autosomes and 1 sex chromosome

Markscheme

5.1 Inheritance Questions

  1. GCSE
  2. /Biology
  3. /5.1 Inheritance

97 exam-style questions on OCR GCSE Biology 5.1 Inheritance, covering 5.1.1 The genome, 5.1.2 Environment and phenotype, 5.1.3 Variants and mutations, 5.1.4 How genetic variants influence phenotype, 5.1.5 Asexual and sexual reproduction, 5.1.6 Haploid and diploid, 5.1.7 Meiotic cell division, 5.1.8 Single gene inheritance, 5.1.9 Predicting single gene crosses, 5.1.10 Sex determination, 5.1.11 Multiple gene inheritance, and 5.1.12 Development of our understanding of genetics. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank