An organism's observable behavioral repertoire and external presentation are collectively termed its:
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Answer: B. Phenotype
Explanation
An organism's observable physical traits and behavioral repertoire are collectively referred to as its phenotype. These visible characteristics result from the complex interaction between inherited genes and environmental influences. Phenotype encompasses everything that can be outwardly observed, from morphological structures to behavioral patterns. The term phenotype contrasts directly with genotype, which represents the unobservable underlying genetic blueprint. Natural selection acts directly on an organism's phenotype during the ongoing process of evolutionary adaptation. Changes in environmental conditions can alter phenotypic expression without modifying the underlying DNA sequence itself.
Geneticists study phenotypic variations to understand how specific hereditary disorders manifest across populations. Agricultural scientists monitor plant phenotypes to select superior crop varieties resistant to harsh weather conditions. Evolutionary biologists track phenotypic changes over generations to document species adaptation and speciation events. Environment refers to external surroundings and conditions rather than the organism's own expressed physical traits. Genotype describes the internal genetic code inherited from parents rather than observable physical presentation. Habitat denotes the natural ecological area where a particular species makes its home and survives.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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