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Biology WAEC Past Questions

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56
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
57
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
58
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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59
This stage of mitosis is characterized by the
  • A. movement of the chromosome to the poles
  • B. arrangement of chromosomes on the equitorial planes
  • C. centromeres moving apart along the spindle
  • D. interaction of the spindles with the chromosomes
  • E. condensation of chromosomes and formation of spindles
View Answer & Discuss WAEC 1988
60
The ability of organisms to maintain a constant internal environment is known as
  • A. diuresis
  • B. endosmosis
  • C. plasmolysis
  • D. dialysis
  • E. homeostasis
View Answer & Discuss WAEC 1988
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