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Biology 1988 WAEC Past Questions

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41
Which of the following is not a constituent of DNA?
  • A. Purine
  • B. Phosphate
  • C. Cystocine
  • D. Deoxyribose
  • E. Uracil.
View Answer & Discuss WAEC 1988
42
Which of the following best describes the homologous chromosomes? They are
  • A. a product of the division of a chromosome
  • B. two identical chromosomes from each parent
  • C. chromosomes arranged on spindle fibres during cell division
  • D. daughter chromatides formed during meiotic division
  • E. chromosomes during telophase of mitotic division
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43
The haploid number of chromosomes in man is
  • A. 48
  • B. 46
  • C. 42
  • D. 24
  • E. 23
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44
If a cross is made between a pure-breeding red flowered plant and a pure-breeding white flowered plant
where R is dominant for red flower and r is recessive for white, the most likely result of F generation will be
  • A. 75% red flowers and 25% white flowers
  • B. all red flowers
  • C. 75% white flowers and 25% red flowers
  • D. 50% red flowers and 50% white flowers
  • E. all white flowers
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45
A man with blood group A (TAP) married a woman with blood group O (pp). Which of the following is the
probable ratio of the blood groups of the offspring?
  • A. 1:1
  • B. 3:1
  • C. 2:1:1
  • D. 1:2:1
  • E. 4:1
View Answer & Discuss WAEC 1988
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