If the Correlation Between Identical Twins on Trait R Is

question 97

Multiple Choice

If the correlation between identical twins on trait R is higher than is the correlation between fraternal twins on trait R, behaviour geneticists conclude that

• A)genetic factors are important in the development of trait R.
• B)genetic factors are irrelevant to the development of trait R.
• C)environmental factors are irrelevant in the development of trait R.
• D)genetic factors and environmental factors play equivalent roles in the development of trait R.

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Definitions:

Muscle Mass

Refers to the total amount of muscle tissue in the body, important for posture, movement, and overall metabolic rate.

Strength Training

Physical exercises designed to improve muscle strength, endurance, and size.

Body Composition

The measure of the relative amounts of muscle, fat, bone, and other vital parts of the body.

Muscle

Tissues in the body capable of contracting, making movement possible and contributing to physical strength.