## Core Concept
Turner syndrome is a genetic disorder that affects females, where one of the X chromosomes is missing or partially deleted. This condition leads to various physical, developmental, and reproductive issues. The underlying cause is related to **karyotypic abnormalities**, specifically **45,X** or mosaicism.

## Why the Correct Answer is Right
To address this question accurately, we need the specific statements regarding Turner syndrome. However, given the nature of the query, we can infer that the correct answer will relate to a statement that does not align with known characteristics or manifestations of Turner syndrome. Typically, Turner syndrome is associated with short stature, ovarian dysgenesis leading to infertility, heart defects (like bicuspid aortic valve), and certain learning disabilities.

## Why Each Wrong Option is Incorrect
Without the specific details of options A, B, C, and D, we can still provide a general approach to why each incorrect statement about Turner syndrome would be wrong:
- **Option A:** If this option describes a known feature of Turner syndrome (e.g., short stature, heart defects), it would be incorrect to say it's the exception.
- **Option B:** Similarly, if this option aligns with Turner syndrome characteristics (e.g., ovarian dysgenesis, infertility), it wouldn't be the correct exception.
- **Option C:** This would depend on the content but would be incorrect if it accurately describes Turner syndrome.
- **Option D:** Marked as the correct answer, implying the other options are true statements about Turner syndrome.

## Clinical Pearl / High-Yield Fact
A key point to remember is that Turner syndrome is associated with **45,X karyotype** in most cases, though mosaicism (45,X/46,XX) can occur. A classic clinical feature is **short stature**, and there's an increased risk of **heart defects** and **autoimmune diseases**.

## Correct Answer Line
Given that the question and specific details of the options are not provided, let's assume based on standard knowledge:
**Correct Answer: D.**