Turner's syndrome is represented by

Options

A. XYY
B. XO
C. XXXY
D. XXY

Answer

### Step-by-Step Solution:

1. **Understanding Turner’s Syndrome**: Turner’s syndrome is a genetic condition that affects females, characterized by the absence of one of the two X chromosomes.

2. **Chromosomal Composition**: In normal females, the chromosomal composition is typically 46 chromosomes, which includes 22 pairs of autosomes and 2 X chromosomes (XX). In Turner’s syndrome, there is a monosomy of the sex chromosome, which means there is only one X chromosome present.

3. **Representation of Turner’s Syndrome**: The chromosomal representation of Turner’s syndrome is denoted as 45,X. This indicates that there are 45 chromosomes in total, with only one X chromosome and no second sex chromosome (Y chromosome or another X).

4. **Effects of Turner’s Syndrome**: Females with Turner’s syndrome often exhibit certain physical and developmental characteristics, such as short stature, underdeveloped breasts and uterus, infertility, and other health issues.

5. **Conclusion**: Therefore, the correct representation of Turner’s syndrome is 45,X.