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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
he genotype of offspring formed from Tt x tt will be ________?
  • A
    TT and tt
  • B
    Tt and tt
  • C
    Only tt
  • D
    Only TT
✓

Answer

  1. Tt and tt

Explanation:

The heterozygous parent can produce two types of gametes one having T allele and other having t allele.

However, second parent being homozygous can produce only one type of gamete having t allele.

Random mixing of these gametes will produce following progeny:

Tt one half the total number of progeny.

tt one half the total number of progeny.

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