The number of linkage groups in a cell having 10 pairs of chromosomes are :-

Options

A. 5
B. 10
C. 15
D. 20

Answer

To solve the question regarding the number of linkage groups in a cell with 10 pairs of chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Chromosome Pairs**:
- The question states that there are 10 pairs of chromosomes. This means that in total, there are 20 chromosomes (10 pairs x 2).

2. **Identify Haploid and Diploid States**:
- In diploid organisms, chromosomes exist in pairs. The haploid number (n) is the number of distinct chromosomes, which is half of the diploid number.
- Since there are 10 pairs of chromosomes, the haploid number (n) is 10.

3. **Linkage Groups Definition**:
- A linkage group is defined as a set of genes that are located on the same chromosome and tend to be inherited together.
- The number of linkage groups in an organism is equal to the number of autosomes in its haploid cell.

4. **Determine the Number of Linkage Groups**:
- Since the haploid number of chromosomes is 10, this means there are 10 linkage groups corresponding to the 10 autosomes.

5. **Conclusion**:
- Therefore, the total number of linkage groups in a cell having 10 pairs of chromosomes is 10.

### Final Answer:
The number of linkage groups in a cell having 10 pairs of chromosomes is **10**.

---