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2 marksCell Division and Genetics

CSEC Human and Social Biology · January 2009 · Paper 2 · Question 8(c)

In humans, brown eye colour is dominant over blue eye colour. Mr and Mrs Browne both have brown eyes, and together have three brown-eyed children and one blue-eyed child.

Deduce the genotypes of Mr and Mrs Browne and show the genetic cross working to determine the genotypes of their children.

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Other parts of this question

  1. 8(a)Complete the statement by filling the blanks using words from the list: (ribosome, DNA, RNA, chromosome, cytoplasm, nucleus).[3 marks]
  2. 8(b)Complete Table 2 by listing five correct differences distinguishing mitosis from meiosis.[5 marks]

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