A 3^rd Grade Mathematics Exam Designed to Be a Comprehensive

question 39

Multiple Choice

A 3^rd grade mathematics exam designed to be a comprehensive measure of the mathematics skills covered in a 4^th grade curriculum only includes questions involving fractions.This is an example of which threat to validity?

• A)Construct-irrelevant variance
• B)Construct underrepresentation
• C)Factor variance
• D)Item homogeneity

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Definitions:

Replication Fork

Y-shaped structure produced during the semiconservative replication of DNA.

Template Strand

The strand of DNA that serves as the guide for synthesizing RNA during transcription, ensuring the correct sequence of nucleotides.

DNA Replication

The biological process of producing two identical replicas of DNA from one original DNA molecule, essential for cell division.

Complementary Base Pairing

The pairing of bases by hydrogen bond formation in double-stranded nucleic acids according to the base pairing rules: adenine pairs with thymine (in DNA) or uracil (in RNA), and guanine pairs with cytosine.