Molecular Evidence Points to __________ as an Explanation for the Great

question 43

Multiple Choice

Molecular evidence points to __________ as an explanation for the great diversity of hormones and hormone receptors in vertebrates.

• A)polyploidy and nondisjunction
• B)gene duplications followed by mutations
• C)continental drift
• D)chromosomal translocations
• E)homeotic genes

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Definitions:

Expected Cell Frequency

In the context of a contingency table, it is the number of observations expected in a cell based on the hypothesis being tested.

Chi-square Test of Independence

The Chi-square Test of Independence is a statistical test used to determine if there is a significant relationship between two categorical variables.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or to a system without violating any constraint.

Contingency Table

A tabular method to represent and analyze the relationship between two or more categorical variables, showing the distribution of one variable across levels of the other variable(s).