Exposure to Toxins During Weeks 3 to 5 During a Pregnancy

question 220

Multiple Choice

Exposure to toxins during weeks 3 to 5 during a pregnancy would be most likely to result in defects in which of the body's organs?

• A) the brain
• B) the ears
• C) the heart
• D) the genitalia (sexual organs)

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Definitions:

Underlying

Constituting the fundamental or basic layer or aspect of something, often not immediately visible or apparent.

Observed

Noted or perceived through careful attention or surveillance.

Genotype

The genetic constitution of an individual organism, determining inherited characteristics.

Phenotype

Describes the set of observable characteristics or traits of an organism as a result of the interaction of its genotype with the environment.