मराठी

What is the expected genotypic ratio when an F₁ heterozygous individual (Tt) is back crossed with the homozygous dominant parent (TT)?

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प्रश्न

What is the expected genotypic ratio when an F₁ heterozygous individual (Tt) is back crossed with the homozygous dominant parent (TT)?

पर्याय

  • TT : Tt (1:1)

  • All TT

  • Tt : tt (1:1)

  • TT : Tt : tt (1:2:1)

MCQ
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उत्तर

When F₁ (Tt) is crossed with the homozygous dominant parent (TT), the cross Tt × TT produces offspring with genotypes TT and Tt in a 1:1 ratio. Both genotypes express the dominant phenotype, so all offspring appear tall or dominant.

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