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Biology 2021 WAEC Past Questions

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41

The diagrams above are illustrations of types of comb found in domestic fowl. Study them and answer this question.

Which factor is most likely responsible for the various types of comb?

  • A. environment
  • B. genetics
  • C. physiology
  • D. morphology
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42

Which of the following statements about mitosis is not correct?

  • A. chiasmata are not formed
  • B. Bi-valents are not formed
  • C. It does not lead to variation
  • D. Four daughter cells are produced
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43

A mixture of blood with antigen A and blood containing antibody a will?

  • A. lead to agglutination
  • B. facilitate dissolution of clot
  • C. have no effect on blood composition
  • D. change the blood group
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44

Plants suitable for experiments in genetics must not 

  • A. produce numerous seeds within a short time
  • B. have a small number of chromosomes
  • C. have a relatively short life cycle
  • D. produce one generation in a large period
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45

Which of the following statements about sickle cell anaemia is correct?

  • A. it is caused by sex-linked genes
  • B. it is more common in males than in females
  • C. two sickle cell carrier parents may have a sickling child
  • D. it is caused by recessive genes
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WAEC offline past questions - with all answers and explanations in one app - Download for free
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts