Rudimentary ovary and lack of secondary sexual characters are symptoms of

Options

A. Down syndrome
B. Phenylketonuria
C. Klinefelter's syndrome
D. Turner's syndrome

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Symptoms**: The question mentions "rudimentary ovary" and "lack of secondary sexual characters". Rudimentary ovaries indicate that the ovaries are not fully developed, which can lead to infertility or sterility in females. The lack of secondary sexual characters, such as breast development and menstrual cycles, further supports this condition.

2. **Identifying Possible Conditions**: We need to consider various genetic conditions that could lead to these symptoms. The options provided in the context of the video include Down syndrome, phenylketonuria, Klinefelter syndrome, and Turner syndrome.

3. **Analyzing Down Syndrome**: Down syndrome is caused by a trisomy of chromosome 21 (an extra chromosome). It primarily affects physical and cognitive development but does not specifically affect female reproductive structures or secondary sexual characteristics.

4. **Analyzing Phenylketonuria**: Phenylketonuria (PKU) is a metabolic disorder caused by a deficiency in the enzyme that breaks down phenylalanine. It is not linked to the development of sexual characteristics or reproductive organs.

5. **Analyzing Klinefelter Syndrome**: Klinefelter syndrome occurs in males who have an extra X chromosome (XXY). This condition can affect male secondary sexual characteristics but does not apply to females.

6. **Analyzing Turner Syndrome**: Turner syndrome is a condition that affects females, characterized by the absence of one X chromosome (XO). This leads to underdeveloped ovaries (rudimentary ovaries) and a lack of secondary sexual characteristics, such as breast development and menstrual cycles.

7. **Conclusion**: Based on the analysis, the symptoms of rudimentary ovaries and lack of secondary sexual characters are indicative of Turner syndrome.

**Final Answer**: Turner syndrome.

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