A Consequence of Organelle Heredity Is That Sequence Changes in MtDNA

question 3

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) Mitochondrial variants in people descending from originally small populations show enough diversity to be used to construct an evolutionary tree.
• B) The original human population must have grown to be quite large before its members began migrating to other lands and other continents.
• C) Nuclear gene sequencing must be used to resolve the question of human ancestral origins.
• D) Current human populations must have a much higher mutation rate than ancient populations.
• 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:

Extra Privileges

Special rights, advantages, or immunities granted to an individual or a group beyond the usual.

Group's Pressures

The influence exerted by a group on its members to conform to its norms and expectations, which can impact individual behavior and decisions.

Whistleblowing

The act of exposing any kind of information or activity that is deemed illegal, unethical, or not correct within an organization by someone inside that organization.

Bad Example

A model of behavior that is considered negative or undesirable for others to emulate.