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2986
When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?
  • A. 25%
  • B. 50%
  • C. 75%
  • D. 100%
View Answer & Discuss (3) JAMB 2012
2987

The correct base pairing for DNA is

  • A. adenine → thymine and guanine → cytosine
  • B. adenine → guanine and thymine → cytosine
  • C. adenine → cytosine and guanine → thymine
  • D. adenine → adenine and cytosine → cytosine
View Answer & Discuss (4) JAMB 2012
2988

The short thick beak in birds is an adaptation for

  • A. crushing seeds
  • B. sucking nectar
  • C. tearing flash
  • D. straining mud
View Answer & Discuss (2) JAMB 2012
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2989

The basking of Agama lizards in the sun is to

  • A. change the colour of their body
  • B. raise their body temperature to become active
  • C. fight to defend their territories
  • D. attract the female for courtship
View Answer & Discuss (12) JAMB 2012
2990

The significance of a very large number of termites involved in nuptial swarming is to

  • A. provide birds with plenty of food
  • B. ensure their perpetuation despite predatory pressure
  • C. search for a favourable place to breed
  • D. ensure that every individual gets a mate
View Answer & Discuss (16) JAMB 2012
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