WEBVTT

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Your observable traits,

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also known as your 
Phenotypes

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result from the interaction between your genes

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and the environment.

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This interaction 
begins in the womb

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and continues 
throughout your life.

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Differences in some phenotypes, like height,

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are determined 
mostly by genes.

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If you had short parents
and grandparents,

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you probably don't 
tower over your peers.

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Though 
environmental factors,

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like nutrition,

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can have some 
effect on your height.

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Genes also play a role in whether you have

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a healthy body weight.

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But diet and exercise can profoundly affect

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how much you weigh.

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How genes influence 
your personality

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is less understood.

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You can now learn about over a million SNPs

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in your genome all at once.

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And every day, scientists are learning more and more

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about how some of these SNPs affect your phenotype.

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Getting to know your genome can help you understand

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a little better why you are
the way you are

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and in what ways you are similar to, or different from

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your family, friends, 
and neighbors.

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