Individuals with a karyotype of 45 chromosome 44 automsome and one sex chromosome have been found to suffering from the abnormality called female dysgenesis or

Options

A. Down syndrome
B. Turner syndrome
C. Klinefelter's syndrome
D. Testiculer feminisation

Answer

### Step-by-Step Solution:

1. **Understanding the Karyotype**: The question states that individuals have a karyotype of 45 chromosomes, which includes 44 autosomes and 1 sex chromosome. In normal humans, the karyotype consists of 46 chromosomes (44 autosomes and 2 sex chromosomes).

2. **Identifying the Condition**: The presence of only one sex chromosome (in this case, likely one X chromosome) in females indicates a specific genetic condition. Normal females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).

3. **Recognizing the Abnormality**: The condition described is known as Turner syndrome. This syndrome occurs when a female has only one X chromosome (45,X instead of the normal 46,XX).

4. **Symptoms of Turner Syndrome**: Individuals with Turner syndrome may exhibit various physical and developmental abnormalities, including:
- Short stature
- Developmental delays
- Infertility
- Late onset of puberty

5. **Conclusion**: Therefore, the abnormality referred to in the question is Turner syndrome, which is characterized by the presence of only one X chromosome in females.

### Final Answer:
The abnormality called female dysgenesis in individuals with a karyotype of 45 chromosomes (44 autosomes and 1 sex chromosome) is known as Turner syndrome.