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The reaction of ethylene and water yields
Validity
The extent to which a test, instrument, or procedure accurately measures what it is intended to measure or achieves the intended purpose.
Test
An examination of knowledge, skill, or ability, or a procedure intended to establish the quality, performance, or reliability of something.
Reaction Range
The concept in genetics that an individual's phenotype (expressed traits) for a trait can vary within a range, depending on environmental conditions.
Identical Twins
Twins who develop from a single fertilized egg that splits, resulting in two genetically identical individuals.
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