Whales and Pigs Diverged About 80 Million Years Ago

question 242

Multiple Choice

Whales and pigs diverged about 80 million years ago.Suppose a DNA sequence has had 48 changes between whales and pigs.The same DNA sequence has had 6 changes between two different species of whales.Assuming a molecular clock is operating, the whale species diverged _______ million years ago.

• A) 5
• B) 10
• C) 20
• D) 30
• E) 40

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Definitions:

Confidence Level

The probability that a confidence interval contains the true population parameter.

Population Standard Deviation

A measure of the dispersion or variability of a population dataset, quantifying how much the members deviate from the population mean.

Mean Annual Return

The average return earned by an investment over a specific number of years, expressed on an annual basis.

Bond Funds

Mutual funds that invest primarily in bonds or other types of debt securities.