How many gamets will have the recessive allels only if genotype of an individual is AabbCc ?

Options

A. 1
B. 0.5
C. 0.75
D. 0.25

Answer

To determine how many gametes will have only recessive alleles from the genotype AabbCc, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Genotype**: The given genotype is AabbCc. Here, we have three genes: A, B, and C. The alleles for each gene are:
- A: A (dominant) and a (recessive)
- B: b (homozygous recessive, so only b is present)
- C: C (dominant) and c (recessive)

2. **Focus on the Relevant Genes**: Since the B gene is homozygous (bb), it will not contribute to the variety of gametes. We only need to consider the A and C genes for gamete formation.

3. **Determine Possible Alleles for Gametes**:
- For the A gene, the possible alleles are A and a.
- For the C gene, the possible alleles are C and c.

4. **List Possible Combinations**: When forming gametes, we can combine one allele from each gene:
- From A: A or a
- From C: C or c

The combinations of alleles from A and C will be:
- AC (dominant A and dominant C)
- Ac (dominant A and recessive c)
- aC (recessive a and dominant C)
- ac (recessive a and recessive c)

5. **Identify Gametes with Only Recessive Alleles**: The only gamete that contains recessive alleles for both genes is:
- ac (where both A and C alleles are recessive)

6. **Count the Gametes with Recessive Alleles**: There is only **1** gamete (ac) that contains only recessive alleles.

### Final Answer:
The number of gametes that will have only recessive alleles from the genotype AabbCc is **1**.

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