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JAMB Biology 1983 Question 24

Question 24

Mendelian Inheritance

An organism having one pair of identical genes is

  1. A.a heterozygote
  2. B.a hybrid
  3. C.an allelomorph
  4. D.a homozygote
  5. E.a diploid.
Show the answer and explanation

Answer: D (a homozygote)

Explanation

When the two alleles of a gene pair are the same (e.g. TT or tt), the organism is homozygous for that gene.