Thursday, June 24, 2010

What are the chances of a child inheriting the eye color of one parent, but the eye shape of the other?

Is it possible/likely that a child could inherit the eye color of one parent but the eye shape of the other?





For example, I have almond-shaped black eyes, and my fiance has round green eyes. We were joking last night about how we'd want our children to have his green eyes, but my almond shape.





Is this possible/likely?


Thanks. :)What are the chances of a child inheriting the eye color of one parent, but the eye shape of the other?
The answer is probably more complex than you would imagine. It depends on how many genes control the expression of both of those traits.





But assuming one gene controls eye color and one gene controls eye shape, the probability would be 25% because:





50% chance of inheriting eye color gene from one parent AND 50% chance of inheriting eye shape of other parent, and 0.5 x 0.5 = 0.25 = 25%.





In reality, the chance is probably somewhere close to this value.What are the chances of a child inheriting the eye color of one parent, but the eye shape of the other?
Eye color and eye shape are two entirely different things and are controlled by different genes. It also has to do with dominant and recessive genes. With eye color, brown is dominant and blue is recessive. If you have brown eyes it is because you inherited at least one dominant gene for brown eyes. Since brown is dominant, it will always overcome the recessive gene. If your parents have brown eyes and you have blue eyes, each must have a blue and a brown eyed gene in each parent. It that case, there is a 25% chance that their offspring will have both dominant brown eyed genes. There will be a 50% chance that their offspring will have a mixture of 1 brown and 1 blue eyed gene but have brown eyes because brown is dominant. There is a 25% chance that their offspring will have blue eyes when both recessive genes show up. The matter of eye shape is the same thing. It has to do with dominant and recessive genes and which ones your parents pass on to you.
It is possible, but not likely. Darker eye colors are dominant, so your child will probably inherit your eye color.





The look of your avatar seems asian. If you are asian, then your child will probably look a lot more asian than white. Have you seen John and Kate Plus 8? It's about a white woman and an asian man who married and had 8 kids, and all of their kids look asian. None of them really look white at all.

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