CSEC Biology · January 2019 · Paper 2 · Question 3(a)(i)
What is the effect on the expression of phenotype for continuous and discontinuous variation?
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- 3(a)(ii)State how the data for continuous variation should be presented graphically.[1 mark]
- 3(b)(i)State ONE characteristic of human beings that shows continuous variation.[2 marks]
- 3(b)(ii)State ONE characteristic of human beings that shows discontinuous variation.[2 marks]
- 3(c)State TWO cellular components of blood.[2 marks]
- 3(d)(i)Complete the genetic diagram below to show how this is possible.[4 marks]
- 3(d)(ii)What is the genotype of the child with blood group O?[1 mark]
- 3(e)Suggest THREE events which take place during sexual reproduction which may have led to the variation in the height of the two sisters.[3 marks]
More practice: the rest of this paper · more Genetic Variation and Speciation questions · all CSEC Biology past papers