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3 marksPatterns of Inheritance

CAPE Biology Unit 1 · 2014 · Paper 2 · Question 2(b)(ii)b)

In a paternity suit, a female with blood type O has accused a male with blood type B of being the father of her child. The child has blood type O.

If the male parent in (b) (ii) a) above has blood type B, demonstrate the inheritance of the blood type (O) of the child. Use the given symbols and a Punnett square.

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Other parts of this question

  1. 2(a)(i)Complete Table 1 by writing the correct answers in the relevant spaces in the table.[4 marks]
  2. 2(a)(ii)In the box labelled A in Figure 2, sketch a diagrammatic representation of the tRNA molecule carrying the next amino acid to be added to the growing…[3 marks]
  3. 2(b)(i)Briefly explain the nature of the relationship between the alleles in the AB blood group.[2 marks]
  4. 2(b)(ii)a)Deduce the blood genotype of the accused male which will clearly prove that he is NOT the father of the child. Give a brief explanation to justify your answer.…[3 marks]

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