Fragile-X Syndrome Is Caused by

question 83

Multiple Choice

Fragile-X syndrome is caused by

• A) a single base change in the DNA.
• B) the changing of a valine into a glutamic acid.
• C) triplet expansion.
• D) a chromosomal translocation.
• E) nondisjunction of the X chromosome in meiosis.

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Definitions:

Ethnic Sharing

The action of sharing cultural, traditional, or ethnic backgrounds within a community, fostering a sense of identity and belonging.

Two-Parent Families

Family units consisting of two adults who are in a relationship and are the caregivers to one or more children.

Decreasing Percentage

A quantitative measure showing a reduction in the proportion of a part relative to the whole over a certain period.

Increasing Number

A term indicating a rising count or quantity of a particular group or phenomenon.