2007-07-09 08:32:33 · 10 answers · asked by P-Gal 1 in Science & Mathematics ➔ Biology
Can a baby’s eye color and hair color be predicted or determined?
The color of a person’s eyes is thought to be the result of the interaction of several different genes. The amount of pigment and its distribution in the eye determines whether a person has brown, hazel, green or blue eyes. The common belief that blue eye color, for example, behaves as a “recessive” to brown eye color is not strictly true. There are many families in which both parents have blue eyes, but their children have brown eyes. The opposite can occur as well. Hair color is inherited in a similar manner to eye color, with many different genes involved. There is no genetic testing that can be done to predict the eye and hair color of children. The chance of having a child with a particular eye or hair color cannot be estimated by knowing the eye and hair color of the parents or other family members, as the genetic aspects of both traits in humans is poorly understood.
2007-07-09 08:42:33 · answer #1 · answered by DanE 7 · 4⤊ 1⤋
Pip is on the right track. There are two main genes that operate closely as a regular dominant and recessive system. However, recent research has identified at least 6 modifyer genes that contribute eye color. This is why any two parents can have offspring with any type of eye color, though the probabilities of any one color are not equal. So, two blue eyed parents have a good chance of having a blue eyed child, with less of a chance of children having other eye colors (e.g. green, hazel, brown) are possible.
2007-07-09 17:17:17 · answer #2 · answered by Katia V 3 · 3⤊ 0⤋
As a rule, no - the gene for blue eyes is recessive, so if you are blue eyed, it means both your sets of genes are for blue eyes and you can only pass that on to your child. But there's a very small chance of some genetic mutation taking place, so you can't rule it out completely.
2007-07-09 15:45:15 · answer #3 · answered by Anonymous · 1⤊ 1⤋
It is 99.99% impossible being that the blue eyed gene is homozygous recessive and both parents have blue eyes. If you do the punnet square you will see that there is no chance of the children having brown eyes.
For example, The genotype for blue eyes is bb. If you cross two parents of the same genotype you get 4 bbs which means all the children will have blue eyes.
The .01% is in the case of mutations.
2007-07-09 16:00:49 · answer #4 · answered by Anonymous · 1⤊ 1⤋
yup. its about genetics and mostly about the put. square. sooooo two blue eyed people could be blue eyed recessive or blue eyed dominant. and they could have a 3:1 chance on a different eye color. or they would have to both be dominant to get a blue eyed child. u can actually figure out what it will be if u find out who's what.
2007-07-09 15:42:39 · answer #5 · answered by babyashweed1221 2 · 0⤊ 3⤋
last time I checked Blue eyes are a double recessive pairing and Brown is a dominant single.
so you should have blue eyed children....
2007-07-09 15:42:46 · answer #6 · answered by hattrick00 2 · 2⤊ 2⤋
it's not 100% impossible, but it is 99.9% impossible.
there are two primary genes.. and you both have the double recessive.. otherwise you wouldn't both have blue eyes.. but there are some other minor genes that play a role in eye color.. and there is also always the possibility of genetic anomalies.
but if you guys had a million kids.. it would be a good bet that 999,999 of them would have blue or green eyes.
2007-07-09 15:41:42 · answer #7 · answered by pip 7 · 4⤊ 1⤋
Yes it's possible if they carry the brown genes. Check this site:
http://www.wonderquest.com/brown-eyed-babies.htm
2007-07-09 15:43:48 · answer #8 · answered by delilahbee 2 · 0⤊ 3⤋
Yeah especially if there are brown eyed people in your family, why? do you not think that the baby is yours?
2007-07-09 15:41:16 · answer #9 · answered by Mrs. Person 3 · 0⤊ 3⤋
nope its 100% impossible
2007-07-09 15:35:37 · answer #10 · answered by Koozie the chemist 4 · 0⤊ 4⤋