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866
During binary fission in lower organisms, the nucleus is known to undergo
  • A. mitosis
  • B. meiosis
  • C. fragmentation
  • D. mutation
View Answer & Discuss (5) JAMB 1997
867

One reason for the success of Mendel's work is that he

  • A. was the first to carry out research work on modern genetics
  • B. introduced quantitative and qualitative elements into his work
  • C. selected two characteristics only at a time for study
  • D. drew up his laws of inheritance based on his knowledge of chromosomes
View Answer & Discuss (20) JAMB 1997
868

The homozygous condition HbsHbsresults in sickle cell anaemia whereas HbAHbs has the sickling trait. What is the probability that a couple with the sickling trait will give birth to one normal child?

  • A. 1/2
  • B. 1/4
  • C. 1/8
  • D. none
View Answer & Discuss (25) JAMB 1997
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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869

Which of the following characters is NOT sex-linked?

  • A. Albinism
  • B. Baldness
  • C. Haemophilia
  • D. Colour blindness
View Answer & Discuss (31) JAMB 1997
870
What combination of character should a prey develop to survive the environment of its predator?
  • A. Camouflag, well developed limbs and effective vision
  • B. Showy colour, big body and well developed limbs
  • C. Camouflage, big body and effective vision
  • D. Showy colour, well developed muscles and an acute sense of smell
View Answer & Discuss (4) JAMB 1997
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