If BB represent barr body and `Y_(0)`Y-body XXY or Klinefelters syndrome has

Options

A. BB-1,`Y_(0)-0`
B. BB-1,`Y_(0)-1`
C. BB-0,`Y_(0)-1`
D. BB-2,`Y_(0)-1`

Answer

To solve the question regarding the Barr body and Y-body in the context of Klinefelter's syndrome (XXY), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Barr Bodies**:
- Barr bodies are inactivated X chromosomes found in females and in individuals with more than one X chromosome. In humans, typically, one Barr body is formed for each X chromosome beyond the first.

2. **Analyzing Klinefelter's Syndrome**:
- Klinefelter's syndrome is characterized by the presence of an extra X chromosome, resulting in the genotype XXY. This means there are two X chromosomes and one Y chromosome.

3. **Calculating Barr Bodies in XXY**:
- For Klinefelter's syndrome (XXY), the number of Barr bodies can be calculated using the formula:
\[ \text{Number of Barr bodies} = \text{Number of X chromosomes} - 1 \]
- In this case, there are 2 X chromosomes, so:
\[ \text{Number of Barr bodies} = 2 - 1 = 1 \]
- Therefore, there is 1 Barr body (denoted as bb1).

4. **Identifying Y Chromosome**:
- In Klinefelter's syndrome, there is one Y chromosome present. This can be denoted as y1.

5. **Combining the Results**:
- From the above analysis, we find that Klinefelter's syndrome (XXY) has 1 Barr body and 1 Y chromosome, which can be represented as:
- Barr body: bb1
- Y body: y1

6. **Final Answer**:
- Thus, the correct representation for Klinefelter's syndrome is bb1, y1.