Which Kind of DNA Should Provide the Best Molecular Clock

question 8

Multiple Choice

Which kind of DNA should provide the best molecular clock for determining the evolutionary relatedness of several species whose common ancestor became extinct billions of years ago?

• A)DNA coding for ribosomal RNA
• B)intronic DNA belonging to a gene whose product performs a crucial function
• C)paralogous DNA that has lost its function (that is,no longer codes for functional gene product)
• D)mitochondrial DNA
• E)exonic DNA that codes for a noncrucial part of a polypeptide

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Definitions:

Creative Problem Solving

An approach to finding innovative solutions to complex problems through creativity, thinking outside the box, and exploring unconventional approaches.

Alternatives

Other options or choices available in a decision-making process.

Preparation

The act of making ready or being made ready for use or consideration, often involving planning or organization.

Verification

The process of establishing the truth, accuracy, or validity of something.