DNA can code for a variety of traits, including all the examples you provided. Here’s a breakdown:
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Eye color: Specific genes influence the pigmentation of the iris, determining the range of eye colors from brown to blue and green.
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Risk for certain diseases: Genetic variations can increase the likelihood of developing certain diseases, such as heart disease, diabetes, or certain types of cancer.
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Height: Multiple genes contribute to the regulation of growth and development, affecting overall height.
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Hair color: Similar to eye color, hair color is influenced by genes that determine the type and amount of melanin produced.
In addition to these traits, DNA can also code for many other characteristics such as skin color, susceptibility to allergies, and even certain behavioral traits.