In Some Cases of Genotypic Expression, One Gene of a Pair

question 139

Multiple Choice

In some cases of genotypic expression, one gene of a pair always exerts its effects overriding the potential influence of the other gene. This is the ________ principle.

• A) sex-linked genes
• B) dominant-recessive genes
• C) genetic imprinting
• D) polygenic inheritance

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Definitions:

Hilum

A depression or notch where structures such as blood vessels and nerves enter an organ.

Cortex

The outer layer of an organ or structure, such as the cerebral cortex of the brain, which processes sensory information and is crucial for cognitive functions.

Pharyngeal Tonsils

Lymphoid tissue located in the upper part of the throat behind the nose, known commonly as adenoids.

Lymphatic Trunks

Large lymphatic vessels that collect lymph from smaller lymphatic vessels and deliver it to the venous system.