Multiple choice

A gene is a _____________.

  1. kind of vitamin

  2. type of body cell

  3. unit of heredity

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A gene is a segment in a chromosome found inside the nucleus of a living cell. The traits of an individual, such as the appearance, nature of the voice, resistance to certain diseases etc, coming down from ones ancestry are chemically coded in the genes. They not only contain the recipes for the production of body tissues and enzymes required for respiration and digestion etc,  even the time and the duration for various actions such as growing a beard and producing milk after pregnancy are precisely programmed.

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