No Two People Are Genetically Identical, Except for Identical Twins

question 76

Multiple Choice

No two people are genetically identical, except for identical twins. The main source of genetic variation among human individuals is

• A) new mutations that occurred in the preceding generation.
• B) genetic drift due to the small size of the population.
• C) the reshuffling of alleles in sexual reproduction.
• D) geographic variation within the population.
• E) environmental effects.

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Definitions:

Inborn Ability

A natural skill or talent that a person possesses from birth.

Language Acquisition

The process by which humans learn to perceive, comprehend, and produce language, typically occurring in early childhood through natural exposure and interaction.

Parental Attention

The degree of time and focus a parent gives to their child, which is crucial for the child's emotional, social, and cognitive development.

Epigenetic System

The epigenetic system involves the study of heritable changes in gene expression that occur without altering the underlying DNA sequence, influenced by environmental factors.