Which Small-Scale Mutation Would Be Most Likely to Have a Catastrophic

question 38

Multiple Choice

Which small-scale mutation would be most likely to have a catastrophic effect on the functioning of a protein?

• A) a base substitution
• B) a base deletion near the start of a gene
• C) a base deletion near the end of the coding sequence, but not in the terminator codon
• D) deletion of three bases near the start of the coding sequence, but not in the initiator codon
• E) a base insertion near the end of the coding sequence, but not in the terminator codon

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Definitions:

Identical Twins

Twins that originate from the same fertilized egg, sharing 100% of their genetic material and typically having very similar appearances.

Gene-Environment Correlations

Refers to the phenomenon that an individual's genetic makeup influences their exposure to certain environmental factors.

Genetic Counseling

A professional service providing individuals and families with information about genetic conditions, risks, testing, and management.

Passive Gene-Environment Correlations

Instances where an individual's inherited characteristics influence the environment they are raised in.