What happens in two recessive genes go against each other?

red hair color over 50 image

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like say if someone had light blonde hair and had a kid with someone who had light red hair. They are both recessive genes so which one wins?
Will their kid come out with a mixture of both? Like a lighter red or a strawberry blonde?
Or will it be 50/50?
If they have more than 1 kid could one come out with all red, and the other all blonde?

What about eye color? Blue vs green; which one wins?

Answer
Blanche,
human hair color, and human eye color are both Polygenic traits. This means that they are controlled by more than one gene. Neither is recessive

Think of hair color and eye color (and skin color for that matter) as a long range of values. Their distribution would look like a bell-shaped curve.

Will my children have red hair and blue eyes?

CaliGrlatH

I am of Hispanic descent, I have brown hair and brown eyes. My fiancé is of scottish descent, has blue eyes and red hair. What are the chances of my children having red hair or blue eyes?

Answer
Brown eyes are almost always dominant over blue eyes. So most likely he will have brown eyes. But could still have blue eyes which is pretty rare. Now with the hair color the baby gets the genes from both parents so it could be either brown or red hair. You have 50/50 chance. But say your family has all brown hair and his family is scattered with red hair and brunettes. You would mostly likely have the dominant gene. You could also get genes from grandmother or other relative in the family.

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