The Number of Different Alleles for ABO Types in the Total

question 87

Multiple Choice

The number of different alleles for ABO types in the total human population is

• A) 2.
• B) 3.
• C) 4.
• D) 6.
• E) 8.

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Definitions:

Recessive Gene

A gene that produces its characteristic phenotype only when its allele is identical and partnered with another recessive gene.

Respiratory Infections

Infections that affect the lungs, throat, airways, or sinuses, often leading to breathing difficulties and other symptoms.

Sickle-Cell Anemia

A genetic blood disorder causing red blood cells to assume a sickle shape, leading to blockages in blood flow and various complications.

Recessive Gene

A gene that only expresses its trait when inherited from both parents, as opposed to a dominant gene where one copy is sufficient for expression.