Some identical twins have the same genetic makeup, but look slightly different. Their slight differences in appearance are an example of _______, which are influenced by both biology and environment.

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Phenotypes refer to the observable physical and behavioral characteristics of an organism, which can be influenced by both genetic and environmental factors. In the case of identical twins, their slight differences in appearance are due to variations in their phenotypes, even though their genotypes (the underlying genetic makeup) are identical. This can be influenced by factors such as differences in nutrition, exposure to different environmental toxins, or random developmental variations.

Some Identical Twins Have the Same Genetic Makeup, but Look