Which of the following is true regarding heredity and longevity and health?
A)Twin studies show that illness rates in siblings do not have a genetic component.
B)Of those whose parents died before 78,40% had a chronic illness at age 65.
C)Of those whose oldest grandparent had lived past 90,only about 2% had a chronic illness at age 65.
D)Identical twins are more similar in longevity than are fraternal twins.

Question

Quizplus · Accepted Answer

Identical twins share more of their genetic makeup than fraternal twins, which contributes to the observed similarity in their longevity, indicating a genetic component to lifespan.

Which of the Following Is True Regarding Heredity and Longevity