Gender Probability: Male and Female Chromosomes
There’s about to be a baby boom! In this experiment, you’ll draw marbles from two different cups to create a really big pretend family of boys and girls.
How did you become a boy or a girl? It happened because of your chromosomes. Chromosomes are the instructions inside each of us. They give us our hair color, our eye color, and the other characteristics that our bodies have. They also determine whether we’ll be born a boy or a girl.
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