Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

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Study for the Biology STAAR Test. Improve your skills with flashcards and multiple choice questions, each question is accompanied by hints and explanations. Prepare for success!

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What does phenotype refer to?

Genetic composition of an organism
Physical appearance of an organism
Behavioral traits of an organism
Environmental influences on traits

The correct answer is: Physical appearance of an organism

Phenotype refers to the observable characteristics and traits of an organism, which include physical features like height, color, and shape. This term encompasses the sum of observable traits that arise from the interaction of the organism's genetic makeup, or genotype, with environmental factors. For example, in plants, phenotypic traits might include flower color, leaf shape, and overall growth patterns. While behavior and environmental influences can certainly affect an organism's development and may influence particular aspects of phenotype, the term specifically emphasizes the physical appearance and anatomical traits, which is why the choice highlighting physical appearance is the most accurate description of phenotype.