A Difference Between a ListBox and a Drop-Down ComboBox Is

question 23

Multiple Choice

A difference between a ListBox and a drop-down ComboBox is _________.

• A) a ListBox takes up less room on the form
• B) a ComboBox allows the user to enter text other than what is already in the List
• C) a ListBox allows the user to enter text other than what is already in the List
• D) there is no difference

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Definitions:

Parapatric Speciation

Parapatric speciation is the evolution of new species within a spatially extended population that still has some gene flow.

Allopatric Speciation

The evolution of new species after populations have been separated geographically, preventing gene flow between them.

Sympatric Speciation

The evolution of new species within a contiguous population that still has extensive gene flow.

Gametic Isolation

A type of prezygotic barrier where the gametes (egg and sperm) of two different species fail to unite or fertilize, preventing the formation of a zygote.