Which of these is not a human phenotype?

Question

BlackTom AI · Accepted Answer

To tackle the question, we first identify what counts as a human phenotype: observable traits or characteristics that can be seen or measured in an organism.
Option a: weight. Weight is an observable trait and is commonly used as a phenotypic measure, so this is a human phenotype.
Option b: blue eyes. Eye color is a visible physical trait and is classicly cited as a phenotype, so this is also a human phenotype.
Option c: novelty-seeking behavior. Behavior can be physiological or psychological and is often included in discussions of phenotype since it manifests as an observable characteristic influenced by genetics and environment; thus this can be considered a phenotype as well.
Option d: deletion of a 9 basepair fragment of DNA. This describes a genetic alteration at the DNA level, i.e., a genotype change. While such a deletion can lead to phenotypic consequences, the act of deleting DNA itself is not a phenotype; phenotypes are the observable outcomes, not the underlying genetic mutation itself. Therefore, this option does not describe a human phenotype directly. 
In summary, options a, b, and c refer to observable traits (phenotypes), whereas option d describes a genetic change rather than a phenotype, making it the item that is not a human phenotype.

ANTH 246 ONL SP25 Week 8 Quiz

Which of these is not a human phenotype?

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