How are the phenotypes of your friends different or similar to the phenotypes of their relatives

Phenotypic variation, then, is the variability in phenotypes that exists in a population. For example, people come in all shapes and sizes: height, weight, and body shape are phenotypes that vary. Hair, eye color, and the ability to roll your tongue are variable phenotypes, too

Explanation:

a problem could be dealing witj emotional stress..all of these factors contribute to emotional stress.

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