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O-LevelBiologyGenetics & Variation5090/21 · May/June 2017 · Q56 Marks

The statements E to K relate to the process of reproduction. E produces genetically identical offspring F produces more individuals of the same species G involves only one parent H involves fusion of nuclei I requires gametes J forms a diploid zygote K involves only cell division by mitosis Table 5.1 shows a comparison of sexual and asexual reproduction. Table 5.1 sexual reproduction only asexual reproduction only E both sexual and asexual reproduction Complete Table 5.1 by writing each letter in the correct box to match it to sexual reproduction only, asexual reproduction only, or to both. The first letter has been written in the correct box for you. Use each letter once only.

  1. (implied)Complete Table 5.1 by writing each letter in the correct box to match it to sexual reproduction only, asexual reproduction only, or to both. The first letter has been written in the correct box for you. Use each letter once only.[6]

Mark scheme

Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.

  1. [3] 5 (sexual only) H; I; J;
  2. [2] 5 (asexual only) (E) G; K;
  3. [1] 5 (both) F;

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About this question

Topic
Genetics & Variation, O-Level Biology (syllabus 5090). Structured question, 6 marks.
Source
O-Level Biology, May/June 2017 Paper 2 Variant 1, question 5.

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