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3211
A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?
  • A. 0%
  • B. 25%
  • C. 50%
  • D. 100%
View Answer & Discuss WAEC 2013
3212
When a man who is Rh-positive marries a woman who is Rh-negative, there will be incidence of
  • A. still births
  • B. sicklers
  • C. albinos
  • D. living children
View Answer & Discuss (3) WAEC 2013
3213
The gene that is only located on X-choromosome is said to be
  • A. expressed in females only
  • B. defective
  • C. sex-linked
  • D. expressed in males only
View Answer & Discuss WAEC 2013
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3214
If a boy has blood type O and his mother has blood type A,what is the genotype of his father?
  • A. BB
  • B. AA
  • C. AO
  • D. AB
View Answer & Discuss (5) WAEC 2013
3215
A man's who suffers from haemophilia marries a woman who is a carrier, what percentage of their children are likely to be haemophilie?
  • A. 25%
  • B. 50%
  • C. 75%
  • D. 100%
View Answer & Discuss WAEC 2013
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