In the ABO Blood-Type System,which Genotypes Could Confer Type a Blood

question 31

Essay

In the ABO blood-type system,which genotypes could confer type A blood to a person?

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Definitions:

Foramen Magnum

The Foramen Magnum is a large opening in the base of the skull through which the spinal cord connects to the brain.

Stenosis

A condition characterized by the abnormal narrowing of a body channel or opening.

Spinal Cord

The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and acts as the main pathway for information connecting the brain and peripheral nervous system.

Optic Nerve

A nerve in the head responsible for carrying sight-related data from the retina to the brain.