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Tuesday, 23 June 2026
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Biology Past Questions and Answers

Waec Biology Questions

Question 811:
When Mendel crossed round seeds with wrinkled seeds of Pea Plant, what was the ratio of wrinkled seeds
to round seeds in the F2 plants?
  • A 3 : 1
  • B 2 : 1
  • C 1 : 3
  • D 1 : 2
View Answer & Explanation
Question 812:
Which of the following is not a morphological variation in human beings?
  • A Size
  • B Blood groups
  • C Colour
  • D Fingerprints.
View Answer & Explanation
Question 813:
The name given to a sudden change in a gene or chromosome that can be passed on to the offspring is
  • A Inheritance
  • B Linkage
  • C Alleles
  • D Mutation
View Answer & Explanation
Question 814:
In humans, sex is determined by
  • A Two homologous chromosomes
  • B A dominant gene for maleness present in a male
  • C Two similar sex chromosomes in the male and dissimilar in the female
  • D The differences in the nature of the X and Y chromosomes in the male.
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Question 815:
A man with heterozygous genotype for blood group B marries a woman with heterozygous A, what percentage
(%) of their children would be universal donor?
  • A 50%
  • B 25%
  • C 15%
  • D 10%
View Answer & Explanation