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Biology 1992 WAEC Past Questions

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36
One of the major criticisms against Mendelian laws is that they do not recognise that
  • A. one trait is often controlled by many pairs of genes
  • B. single factor inheritance is never a reality
  • C. complete dominance is always possible
  • D. incomplete dominance is not possible
  • E. hybrids exist in living organisms
View Answer & Discuss WAEC 1992
37
Identical twins inherit their genes from
  • A. the same ovum and different sperms
  • B. the same sperm and different ova
  • C. different sperms and many ova
  • D. the same ovum and the same sperm
  • E. many ova and many sperms
View Answer & Discuss WAEC 1992
38
The offspring produced when pure strains interbreed is descried as
  • A. dominance
  • B. phenotype
  • C. allele
  • D. genotype
  • E. hybrid
View Answer & Discuss (3) WAEC 1992
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39
Which of the following diseases or disorders can be prevented by the application of the knowledge of heredity through marriage counseling ?
  • A. Sickle cell anaemia
  • B. Haemophilia
  • C. Diabetes mellitus
  • D. Colour blindness
  • E. River blindness
View Answer & Discuss WAEC 1992
40
Which of the following is a function of the chromosome?
  • A. Transmission of hereditary traits
  • B. Protein synthesis
  • C. Excretion
  • D. Energy production
  • E. Manufacture of enzyme
View Answer & Discuss WAEC 1992
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