A Consequence of Organelle Heredity Is That Sequence Changes in MtDNA

question 33

Multiple Choice

A consequence of organelle heredity is that sequence changes in mtDNA vary more than nuclear DNA in response to reduction in population size. Which of the following does this imply about human evolutionary history?

• A)Current human populations must have a much higher mutation rate than ancient populations.
• B)Mitochondrial variants in people descending from originally small populations show enough diversity to be used to construct an evolutionary tree.
• C)The original human population must have grown to be quite large before its members began migrating to other lands and other continents.
• D)Nuclear gene sequencing must be used to resolve the question of human ancestral origins.
• E)A single human population, living about 200,000 years ago, could not have given rise to all current human populations.

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Definitions:

Heterogeneity

The quality or state of being diverse in character or content; the presence of dissimilar elements within a group or environment.

Social Loafing

The phenomenon where individuals exert less effort to achieve a goal when they work in a group compared to when they work alone.

Conforming

Adjusting one's behavior or thinking to align with group norms or expectations.

Team Development

The process of enhancing the capability and functionality of a team through various strategies and practices aimed at improving collaboration and performance.