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What is the role of genetics in human development?

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dlee973 | Student | eNotes Newbie

Posted April 10, 2013 at 12:43 AM via web

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What is the role of genetics in human development?

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trophyhunter1 | College Teacher | (Level 3) Senior Educator

Posted April 13, 2013 at 11:47 AM (Answer #1)

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Genetics plays a powerful role in human development. Genes determine an organism's characteristics such as eye color, height, skin color, handedness, and a myriad of other traits that make up a human being. However, genes do not act in a vaccuum. The environment plays a role in genetic expression. For instance, a person might have the genetic potential to develop multiple sclerosis but it may not occur until an environmental trigger like a virus causes this condition to be expressed during a person's lifetime. The same can be said for diabetes and other autoimmune diseases. A person may have the genetic "potential" to be tall however, if they follow a poor diet, and perhaps smoke, the environment will affect gene expression. Although genetics plays a very powerful role in how a human develops, one cannot downplay the role of the environment on gene expression.

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