Fill in the missing alleles based on the given genotype.

  1. AaBB,aabb,aaBB,AAbb
  2. AABB,aabb,AaBb,aaBb
  3. aaBb,aabb,Aabb,AAbb
  4. AABB, AAbb, aaBB, AaBb


Genotype of the 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: AABB, AAbb, aaBB, AaBb

    • In a Punnett square, the upper row represents alleles for the female gametes.
    • The left column represents the alleles for the male gametes.
    • In the given Punnett square, the cross between:
    1. AB & AB produces AABB
    2. Ab & Ab produces AAbb
    3. aB & aB produces aaBB
    4. ab &AB produces AaBb