Hepatitis B Virus

question 57

Multiple Choice

Hepatitis B virus

• A)is principally transmitted by blood.
• B)transmission risks include shared needles, anal intercourse, and heterosexual intercourse.
• C)is transmitted to the newborn from chronic carrier mothers.
• D)has many chronic carriers.
• E)All of these choices are correct.

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Definitions:

Identical Environments

Situations or settings that are exactly the same in every aspect, often used in studies to research the effects of genetics versus environment.

Heritability

The proportion of variation in traits among individuals that can be attributed to genetic factors in a population.

Visual Acuity

A measure of the clarity or sharpness of vision, typically assessed by the ability to discern letters or numbers at a given distance according to a standardized chart or test.

Hair Length

A physical measurement referring to the extent from the root of the hair on the scalp to its tip.