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96
Which of the following major ideas were proved by Gregor Mendel?
  • A. There is a tendency among organisms `to increase rapidly in number if conditions are favourable
  • B. There is a struggle for existence among a very large number of offspring
  • C. Nature selects organisms which will survive to produce their kind
  • D. All species exhibit structural and functional variations
  • E. Characteristics of an organism are controlled by genes occurring in pairs
View Answer & Discuss WAEC 1988
97
Assuming that ‘A’ is gene for normal skin and it is dominant, while ‘a’ is gene for albinism and it is recessive,
what is the likely genotype of a couple which had 50% normal and 50% albinos?
  • A. AA,Aa
  • B. AA,aa
  • C. Aa, Aa
  • D. Aa, aa
  • E. AA,AA
View Answer & Discuss (2) WAEC 1988
98
Which of the following is not a constituent of DNA?
  • A. Purine
  • B. Phosphate
  • C. Cystocine
  • D. Deoxyribose
  • E. Uracil.
View Answer & Discuss (3) WAEC 1988
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99
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
View Answer & Discuss WAEC 1988
100
The haploid number of chromosomes in man is
  • A. 48
  • B. 46
  • C. 42
  • D. 24
  • E. 23
View Answer & Discuss (3) WAEC 1988
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