Refer to the Table

question 243

Short Answer

Refer to the table. The table shows the divergence times (time since last common ancestor) between different species of butterflies and the numbers of changes that have occurred at two different genes.If two species of these butterflies had 200 differences in the gene for alcohol dehydrogenase, approximately how long ago did they diverge from a common ancestor, assuming that they were evolving in accordance with the molecular clock?

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Definitions:

U.S. Price Level

A measure of the average prices of goods and services across the United States economy, indicating the purchasing power of money in the U.S.

Net Exports

The value of a country's total exports minus its total imports, representing the net trade of goods and services with foreign countries.

Price Level

The price level is an index that measures the average prices of goods and services across an economy, indicative of inflation or deflation.

Aggregate Demand Curve

A curve that shows the quantity of goods and services that households, firms, the government, and customers abroad want to buy at each price level.