Question

Aabb x AaBb ? А) 3:2:1 Б)1:1 В)3:1 Г)1:1:1:1 Д)9:3:3:1

Answer 1

д) 9:3:3:1.....................

Answer 2

To determine the genotypic ratio of the offspring from the cross between Aabb and AaBb individuals, we need to consider the possible combinations of alleles from each parent.

Parent 1 (Aabb): Aa Bb Parent 2 (AaBb): Aa Bb

When these two parents reproduce, their offspring can inherit the following combinations of alleles:

1. Aa Bb (from both parents)
2. Aa bb (from parent 1)
3. aa Bb (from parent 2)
4. aa bb (from both parents)

Now let's count the number of occurrences for each genotype:

1. Aa Bb: 1 occurrence
2. Aa bb: 1 occurrence
3. aa Bb: 1 occurrence
4. aa bb: 1 occurrence

The genotypic ratio is the ratio of occurrences of each genotype. In this case, the ratio is 1:1:1:1 (one occurrence of each genotype).

So the correct answer is:

Г) 1:1:1:1