In the Minnesota Study on Reunited Twins, Many of the Twins

question 541

Essay

In the Minnesota study on reunited twins, many of the twins had similarities in political beliefs, job histories, hobbies, and favorite foods.Explain whether heredity or environment account for these similarities.

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Definitions:

Carrier Proteins

Proteins that facilitate the transport of specific substances across a cell membrane by changing shape.

Glucose Carrier

Proteins that facilitate the transport of glucose across cell membranes, via mechanisms such as facilitated diffusion.

Urea

A nitrogenous waste product formed in the liver, important in the metabolic breakdown of proteins and excreted in urine.

Isotonic

A term describing a solution that has the same osmotic pressure as some other solution, especially one in a cell or a body fluid.