A Population of Salamanders Live Along the Edge of a North-South

question 68

Multiple Choice

A population of salamanders live along the edge of a north-south mountain range.The populations from the east and west slope eventually join in a low northern pass and interbreed,producing fertile offspring,but they do not circle around the southern edge because of a desert barrier.When glaciers move southward,the populations are pushed south of the northern pass and are isolated.While isolated,the two populations develop enough differences over time that when the glaciers retreat north and the salamanders again share the same pass,they no longer mate at the same time,nor can they produce fertile offspring.These salamanders

• A) began as one species and therefore remain one species.
• B) were originally two species and remain two species.
• C) were originally one species but are now two species.
• D) the number of species cannot be determined from the information given.

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Definitions:

Type I Error

The error of rejecting the null hypothesis when it is actually true, commonly referred to as a "false positive".

Criminal Trial

A legal proceeding in which a person accused of a crime is tried in a court of law, where evidence is presented to determine guilt or innocence.

Null Hypothesis

A hypothesis that assumes no significant difference or effect, serving as the default assumption in hypothesis testing.

Type I Error

The mistake of rejecting a true null hypothesis, also known as a "false positive".