Biology
Grade-8
Easy

Question

Complete the Dihybrid cross Punnett square diagram.

  1. TTGG, TTGg, TtGg, Ttgg, TtGG, TtGg, ttGg, Ttgg
  2. TtGG, Ttgg, ttGG, ttgg, TtGG, Ttgg, TTGG, TTgg
  3. TTgg, TTGG, TtGg, ttgg, TtGg, Ttgg, TtGG, TTGg
  4. None of the above

hintHint:

Genotype of offspring is obtained by crossing the genes present in the left column with the genes in the upper row of the Punnett square.

The correct answer is: TTGG, TTGg, TtGg, Ttgg, TtGG, TtGg, ttGg, Ttgg


    • In a Punnett square, the upper row represents the alleles for male gametes.
    • The left column represents the alleles for female gametes.
    • In the given Punnett square, the cross between:
    1. TG & TG produces TTGG
    2. TG & Tg produces TTGg
    3. Tg & tG produces TtGg
    4. Tg & Tg produces TTgg
    5. tG & TG produces TtGg
    6. tG & Tg produces TgGg
    7. tg & tG produces ttGg
    8. tg &Tg produces Ttgg
    • Hence, the correct option is TTGG, TTGg, TtGg, Ttgg, TtGG, TtGg, ttGg, Ttgg.

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