Freckles and Genetics
In humans, freckles is dominant over no freckles. A man
with freckles, reproduces with a woman with freckles, but the children
have no freckles. What chance did each child have for freckles?
Maybe both parents were heterozygous for freckles. When you are created at
fertilization, your mom gives one of her freckle genes and your dad gives one
of his freckle genes. If your mom's gene was the freckle gene and your dad's
was the no-freckle gene, then you would have freckles but you still can give
a no-freckle gene to your offspring when you have a baby. If you marry
someone who has both a freckle gene and a no-freckle gene, your baby could
get both of your no-freckle genes and have no freckles.
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Update: June 2012