DP Biology (first assessment 2025)

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Question SPM.2.SL.TZ0.b

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Date May Specimen-2023 Marks available [Maximum mark: 2] Reference code SPM.2.SL.TZ0.b
Level SL Paper 2 Time zone TZ0
Command term Explain Question number b Adapted from N/A
b.
[Maximum mark: 2]
SPM.2.SL.TZ0.b

Explain how sexual reproduction gives rise to genetic variation.

[2]

Markscheme
  1.  recombination of parental alleles during fertilization;
  2.  fertilized egg contains a mixture of paternal and maternal chromosomes;
  3.  crossing over/meiosis gives rise to new combinations of alleles;

Syllabus sections