Which of the Following Is True of All Horizontally Oriented

question 28

Multiple Choice

Which of the following is true of all horizontally oriented phylogenetic trees, where time advances to the right?

• A) Each branch point represents a point in absolute time.
• B) Organisms represented at the base of such trees are descendants of those represented at higher levels.
• C) The fewer branch points that occur between two taxa, the more divergent their DNA sequences should be.
• D) The common ancestor represented by the rightmost branch point existed more recently in time than the common ancestors represented at branch points located to the left.
• E) The more branch points there are, the fewer taxa are likely to be represented.

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Definitions:

Statistical Evidence

Quantitative data used to support or refute a hypothesis or to estimate the truth of a parameter.

Confidence Interval

A range of values, derived from sample statistics, that is believed to contain the value of an unknown population parameter with a certain level of confidence.

Level Of Significance

The threshold used in statistical tests to determine if a result is statistically significant, indicating the probability of the result occurring by chance.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists between certain aspects of a population or parameters.