How many types of gametes can be produced by a diploid organisms, if it is heterozygous for 3 loci?

Options

A. 6
B. 4
C. 8
D. 3

Answer

To determine how many types of gametes can be produced by a diploid organism that is heterozygous for 3 loci, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Loci and Heterozygosity**:
- A locus (plural: loci) refers to a specific position on a chromosome where a gene is located.
- Being heterozygous means that for a particular gene at a locus, the organism has two different alleles (e.g., Aa, Bb, Cc).

2. **Identify the Number of Heterozygous Loci**:
- In this case, the organism is heterozygous at 3 different loci. This means it has different alleles at each of these three positions.

3. **Use the Formula for Gamete Production**:
- The number of different types of gametes that can be produced by a diploid organism is given by the formula:
\[ \text{Number of Gametes} = 2^n \]
- Here, \( n \) is the number of heterozygous loci.

4. **Substitute the Value of n**:
- Since the organism is heterozygous for 3 loci, we substitute \( n = 3 \) into the formula:
\[ \text{Number of Gametes} = 2^3 \]

5. **Calculate the Result**:
- Now, calculate \( 2^3 \):
\[ 2^3 = 8 \]

6. **Conclusion**:
- Therefore, the total number of different types of gametes that can be produced by the diploid organism is **8**.

### Final Answer:
The organism can produce **8 types of gametes**.

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