Melissa Has a Single X Chromosome and No Y Chromosome

question 178

Multiple Choice

Melissa has a single X chromosome and no Y chromosome, an immature female appearance, and lacks internal reproductive organs. What is the most appropriate diagnosis of her condition?

• A) Down syndrome
• B) Turner's syndrome
• C) Fragile X syndrome
• D) Klinefelter's syndrome

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Definitions:

Age At First Reproduction

The age at which an organism successfully produces offspring for the first time, an important life-history trait affecting fitness and evolution.

Offspring Number

The total count of new organisms produced or born to parent organisms within a given time frame.

Male Pipefishes

Members of the Syngnathidae family, unique for their role in childbearing, as males carry and nourish embryos in a specialized pouch.

Optimal Investment

The most efficient allocation of resources or capital to achieve the highest possible return or benefit, considering the level of risk involved.