In an Effort to Identify the Influence of Genetic Factors

question 62

Multiple Choice

In an effort to identify the influence of genetic factors on both Type 1 diabetes and Type II diabetes, researchers calculated concordance rates for monozygotic twins. Concordance rates of 30-50% have been found for Type I diabetes with concordance rates of 80% for Type II. For both kinds of diabetes, dizygotic concordance rates were about 15%. What does this information suggest concerning the relative effect of genetic and environmental factors for each type of diabetes?

• A) Genetic factors have little or no role in the occurrence of Type I diabetes.
• B) Type II diabetes is primarily determined by nongenetic factors.
• C) Genetic influences exert a larger role in Type II diabetes than in Type I diabetes.
• D) Type II diabetes appears to be caused by a single unidentified gene.
• E) Environmental factors have no role in the occurrence of either type of diabetes.

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Definitions:

Christian Church

A religious institution centered on the teachings of Jesus Christ and the Bible, spanning various denominations worldwide, with significant influence on culture, politics, and society.

Vestibule Area

An entrance or a lobby area outside the main part of a building, serving as an antechamber or a waiting area.

Narthex

An architectural space, typically at the western entrance of a church, serving as a vestibule or antechamber to the nave.

Santa Costanza

An ancient church in Rome, Italy, noted for its central plan and early Christian mosaics, originally built as a mausoleum for Constantina, the daughter of the Roman Emperor Constantine.