All of the Following Are Drawbacks Associated with the DNA

question 86

Multiple Choice

All of the following are drawbacks associated with the DNA evidence of tracing African origins except:

• A)scientists assume the DNA is originating in Africa and migrating out,but it could also be migrating into Africa.
• B)mtDNA is not always passed from mother to child;sometimes,it skips a generation.
• C)scientists assume that selective pressures do not affect the DNA,but there is evidence for selective pressure on mtDNA.
• D)both models suggest steady rates of mutation,and mutation is notoriously uneven.
• E)mtDNA studies exclude information carried on the Y chromosome.

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Definitions:

Pertussis

A highly contagious bacterial disease also known as whooping cough, characterized by severe coughing spells.

Immunization

Becoming immune or the process of rendering a patient immune.

Vaccine

Any substance for prevention of a disease.

Artificial Immunity

Immunity acquired through medical interventions, such as vaccinations, as opposed to natural immunity obtained through exposure to pathogens.