Large muscles resulting from lots of weight lifting are NOT an example of a phenotype (Option D).
Phenotype refers to all the observable features and/or traits of an organism.
On the other hand, the genotype is defined as an organism's complete set of genes (i.e., the genome of an organism).
In an organism, genes and the environment interact to shape the phenotype.
In conclusion, large muscles resulting from lots of weight lifting are NOT an example of a phenotype (Option D).
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