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1516
who formulated the theory of natural selection in evolution?
  • A. Louis pasteur
  • B. Robert Hooke
  • C. Jean Lamarck
  • D. Mathias Schlieden
  • E. Charles Darwin
View Answer & Discuss WAEC 1991
1517

The wing of a bat and that of a bird, the flippers of a whale and the fins of s fish are example of?

  • A. adaptive radiation
  • B. vestigial structures
  • C. continuous variation
  • D. convergent evolution
  • E. divergent evolution
View Answer & Discuss (4) WAEC 1991
1518
In an individual who is heterozygous for a particular character, the hereditary factor that is always expressed is described as
  • A. allele
  • B. sickle-cell gene
  • C. dominant gene
  • D. chromosome
  • E. sex-linked character
View Answer & Discuss (2) WAEC 1991
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1519
Which of the following statements best explains the meaning of homologous chromosomes?
  • A. Product of division of chromosomes
  • B. two identical chromosomes from each parent
  • C. chromosome arranged on spindle fibre during cell division
  • D. chromosome arranged on the equatorial plate of the cell
  • E. Daughter chromatide in the first melotic division
View Answer & Discuss WAEC 1991
1520
what stage mitotic division is represented in the diagram of the cell illustrated above
  • A. Prophase
  • B. Telophase
  • C. Anaphase
  • D. Metaphase
  • E. Interphase
View Answer & Discuss (2) WAEC 1988
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