Branches on the Evolutionary Tree Are Sometimes Rearranged by Scientists

question 42

Multiple Choice

Branches on the evolutionary tree are sometimes rearranged by scientists because

• A) new, related fossils or new information about existing fossils changes the understanding of the relationships.
• B) new, unrelated fossils are intentionally put on the tree with existing fossils.
• C) scientists are trying to prove a nonexistent relationship between species.
• D) scientists have proven a relationship between two or more species.

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Definitions:

Set of Data

A collection of numbers, measurements, or observations collected for reference or analysis in a study or experiment.

Median

The middle value in a data set when the values are arranged in ascending or descending order, or the average of the two middle values when there is an even number of values.

Set of Data

A collection of related data points, values, or pieces of information that are grouped together for analysis.

Modal Ethnicity

The most frequently occurring ethnicity within a given population or dataset.