Principle of Descent in Which People Define Themselves in Relation

question 30

Multiple Choice

Principle of descent in which people define themselves in relation to only one side, either their mother's side or their father's side.

• A) unilineal descent
• B) bilateral descent
• C) double descent
• D) parallel descent

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Definitions:

Recessive

A genetic trait that is expressed only when two copies of the gene carrying the trait are present, as opposed to a dominant trait where only one copy is necessary.

Phenylketonuria

A genetic disorder characterized by the body's inability to break down the amino acid phenylalanine, leading to harmful buildup.

Recessive Gene

A gene that expresses its phenotypic trait only when homozygous, as its effect is masked by a dominant gene when heterozygous.

Mental Retardation

Mental retardation is an outdated and offensive term formerly used to describe a condition characterized by significantly below-average intellectual functioning and a lack of skills necessary for daily living; the preferred term is now "intellectual disability."