CSEC Human and Social Biology · January 2010 · Paper 2 · Question 7(b)
What is the name of the chemical which forms a gene?
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Practise this questionOther parts of this question
- 7(a)(i)State the meaning of the term 'genetic variation'.[1 mark]
- 7(a)(ii)State the meaning of the term 'environmental variation'.[1 mark]
- 7(c)Suggest ONE benefit of genetic variation.[1 mark]
- 7(d)(i)Complete Figure 5 to show how sex (gender) is inherited in humans, showing parental genotypes, gametes, offspring genotypes, and offspring phenotypes.[4 marks]
- 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]
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