Biology Past Questions

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4731

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

View Answer & Discuss WAEC 2021

4732

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

View Answer & Discuss (2) WAEC 2021

4733

In humans, pointed eyebrows (B) is a dominant trait over smooth eyebrows (b). A student and the mother have smooth eyebrows while the father has pointed eyebrows. What is the genotype of the father?

A. BB
B. Bb
C. bb
D. BBbb

View Answer & Discuss (3) WAEC 2021

4734

A woman with Rhesus negative blood group was advised not to marry a man with Rhesus positive blood group because

A. it will hinder her from having blood transfusion from her husband
B. it will result in sickness and probably death of the offspring
C. her children may all resemble her husband
D. it may affect her childbearing ability

View Answer & Discuss (6) WAEC 2021

4735

Which of the following organisms exhibits division of labour?

A. butterfly
B. cockroach
C. termite
D. housefly

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