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Dr. Jayden is studying the effect of exercise on cholesterol level. He first measures his patients' cholesterol level before recommending an exercise program and after one month of participating in an exercise program, he measures their cholesterol level again. What type of research design has Dr. Jayden employed?
Twin Study
A study examining twins raised apart and together, usually to explore whether characteristics are caused by genetics or environment.
Nature-Versus-Nurture
A debate concerning the relative importance of an individual's innate qualities (nature) versus personal experiences (nurture) in determining or causing differences in physical and behavioral traits.
Monozygotic Twins
Identical twins sharing the same genetic profile.
Dizygotic Twins
Also known as fraternal twins, these are siblings born at the same time but from two different eggs fertilized by separate sperm, sharing about 50% of their DNA.
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