Quelpr
4 marksCell Division and Genetics

CSEC Human and Social Biology · January 2010 · Paper 2 · Question 7(d)(i)

Figure 5 shows a genetic diagram to represent sex inheritance in humans.

Complete Figure 5 to show how sex (gender) is inherited in humans, showing parental genotypes, gametes, offspring genotypes, and offspring phenotypes.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 7(a)(i)State the meaning of the term 'genetic variation'.[1 mark]
  2. 7(a)(ii)State the meaning of the term 'environmental variation'.[1 mark]
  3. 7(b)What is the name of the chemical which forms a gene?[1 mark]
  4. 7(c)Suggest ONE benefit of genetic variation.[1 mark]
  5. 7(d)(ii)Use your answer to (d)(i) to explain why the number of males and females in a population is approximately the same.[2 marks]

More practice: the rest of this paper · more Cell Division and Genetics questions · all CSEC Human and Social Biology past papers