When Two Alleles for the Same Trait Are Both Expressed

question 21

Multiple Choice

When two alleles for the same trait are both expressed, you know that

• A) both alleles are recessive.
• B) one allele is dominant.
• C) the alleles are codominant.
• D) the alleles are heterozygous.

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Definitions:

Flexion

A movement that decreases the angle between two parts of the body, like bending a limb at a joint.

Abduction

The movement of a body part away from the midline of the body, such as moving an arm or leg sideways.

Adduction

The movement of a body part toward the central axis of the body or toward another body part, such as bringing the fingers together.

Balanced Diet

A diet that includes a variety of foods in the right proportions to provide all necessary nutrients for good health.