Why Is Speciation by Polyploidy More Likely in Plants Than

question 13

Multiple Choice

Why is speciation by polyploidy more likely in plants than in animals?

• A) Plants lack the DNA repair enzymes that animals have.
• B) Plants are sessile and cannot speciate via dispersal.
• C) Plant gametes can be produced from somatic cells that have undergone many rounds of mitosis.
• D) Plant gametes lack postzygotic isolating mechanisms.

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Definitions:

Multiple Regression Model

A statistical method that explains the relationship between one dependent variable and two or more independent variables.

Dependent Variable

A variable in an experiment or study that is expected to change in response to changes in another variable (the independent variable).

Holding Constant

Holding constant is a method used in analysis where certain variables are kept unchanged in order to isolate the effects of other variables.

Independent Variables

Variables in a statistical model that are presumed to influence or cause changes in another variable, without being affected by it.