Which of These Tests Demonstrates the Greatest Utility

question 52

Multiple Choice

Which of these tests demonstrates the greatest utility?

• A)a test in which the selection ratio is 1.00 and the validity of the measure is .25
• B)a test in which the selection ratio is 1.00 and the validity of the measure is .55
• C)a test in which the selection ratio is .25 and the validity of the measure is .25
• D)a test in which the selection ratio is .25 and the validity of the measure is .55

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Definitions:

Directional Selection

Mode of natural selection in which forms of a trait at one end of a range of variation are adaptive.

Disruptive Selection

Mode of natural selection in which forms of a trait at both ends of a range of variation are adaptive, and intermediate forms are selected against.

Hybrid Sterility

A condition in hybrids between different species where the offspring are sterile, unable to produce viable gametes.

Viable Gametes

Sex cells (sperm and eggs) that are capable of fertilization and development into a new organism.