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Biology 2022 WAEC Past Questions

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41

Which of the followig traits in humans is an example of physiological variation?

  • A. skin colour
  • B. fingerprint
  • C. toungue rolling
  • D. height
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42

Individuals belonging to the blood group O are universal donors because ?

  • A. antigens are absent in thier blood cells
  • B. members of the group consitutute the highest number of humans
  • C. there are no of antibodies in thier blood plasma
  • D. the antigens in thier blood cells are easily destroyed
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43

Two tall plants were crossed and all the F1 plants were tall. when the F1 plants were selfed, some of the F2 plants were tall while others were short what are the possible genotypes of the original plants ? 

  • A. Tt and tt
  • B. TT and TT
  • C. tt and tt
  • D. TT and Tt
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44

Which of the following statements best describes a test cross?

  • A. to determine the genotype of an individual whose phenotype is to be known
  • B. to determine the phenotype of an individual whose genotype is known
  • C. between the progeny of parents to ascertain external expressions
  • D. between two homozygous recessive individuals to confirm the genotypes
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45

Which of the following statements about sex linked traits is not correct?

  • A. male inherit sex linked traits from thier fathers
  • B. sex linked traits are more common in males
  • C. females can be carriers beacuse they can be heterozygous for the trait
  • D. males are never carriers since they only recieve one sex chromosome
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WAEC offline past questions - with all answers and explanations in one app - Download for free
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
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208