The ABO Blood Groups in Humans Are Determined by a Multiple-Allele

question 14

Multiple Choice

The ABO blood groups in humans are determined by a multiple-allele system in which I^A and I^B are codominant and are both dominant to I^O.A newborn infant is type A.The mother is type O.Possible phenotypes of the father are

• A) A, B, or AB.
• B) A, B, or O.
• C) O only.
• D) A or AB.
• E) A or O.

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Definitions:

Beriberi

A nutritional disorder caused by a deficiency of thiamine (vitamin B1), affecting the nervous system, cardiovascular system, and muscular system.

Thiamine

A water-soluble B-vitamin (B1) that is essential for the metabolic breakdown of glucose and the functioning of the nervous system.

Vitamin K

A fat-soluble vitamin essential for the synthesis of proteins involved in blood coagulation and bone metabolism.

Alcoholics

Individuals who suffer from alcoholism, a chronic disease characterized by uncontrollable drinking and a preoccupation with alcohol.