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Heredity: How did I get my brown hair?
How did I get my brown hair?
Heredity is when genetic traits are passed from one generation to the next. Mine came from my Mom and Dad.
You get one allele from each parent. They make your genes and they decide your traits.
Dominant genes will appear in the individual (AA, Aa). Recessive genes are hidden by the dominant genes (aa).
Because I have brown hair, I have the dominant gene for brown hair. Blonde would be recessive.
Homozygous genes (same) are either both dominant (AA) or recessive (aa). Heterozygous genes (different) have both a dominant and recessive gene (Aa).
We use a Punnett square to show what possible gene pairs parents can give to their offspring to determine their traits.
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