I am wondering this, not because I have a preference to either color but because it came up in a recent discussion and I am wondering if there are any statistics regarding this.
2006-08-31 13:30:46 · 23 answers · asked by Kevin 2 in Pregnancy & Parenting ➔ Newborn & Baby
well you would have to understand the process of dominant and recessive genes. Each person has two "genes" to determine eye color. It could be two of each of one of both. Brown is the dominate gene and blue is recessive. The dominate gene is the one that can be seen as a trait. If the father carries a recessive gene for blue eyes, then there is a 75% chance the baby's eyes will be brown and a 25% chance that the eyes will be blue. However, if the father carries two dominate genes for brown eyes then the chance increases to 100%.
This is a really simple version. There are charts and graphs that can be used to "show" how this works but I don't know how to type one into the answers section.
2006-08-31 13:40:40 · answer #1 · answered by wunluv06 3 · 1⤊ 0⤋
If my high school biology serves me, it depends on whether the brown eyed parent (in this case the father) carries a recessive gene or not. If not, then if I'm not mistaken it's virtually impossible for the child to have anything but brown eyes. If he carries the recessive blue-eyed gene (even though his eyes are brown), then the child has about a 25 percent chance of having blue eyes.
2006-08-31 20:39:57 · answer #2 · answered by Schleppy 5 · 1⤊ 0⤋
The father can have one of 2 genotypes, Bb or BB (B = Brown and b = blue; Brown in dominant, blue is recessive); mother must be bb
The probability of the eye colors of children are:
BB x bb = all children Bb = all Brown eyes
Bb x bb = 50% Bb and 50% bb = half with brown eyes and half with blue.
Because you don't know the genotype of the father, I would put the probability of a blue eyed child at 25% and brown eyed child at 75%. (Unless one of the father's parents has blue eyes... then we have the second scenario, with 50% chance of each)
2006-08-31 20:42:11 · answer #3 · answered by Pangolin 7 · 2⤊ 0⤋
Blue is recessive and brown in dominant therefore a blue eyed child is more likely . I think the ratio is 3:1 in favor of the recessive gene. But then again, it's been a while since high school science so I could be wrong.
2006-08-31 20:38:06 · answer #4 · answered by lilly 5 · 0⤊ 1⤋
It could be anything. My husband is Caribbean with brown eyes and has a long family history of brown eyes. I'm of German heritage and have blue eyes. I was expecting brown eyes for our daughter but she has grayish eyes with amber streaks. It started off more blue when she was born but darkened over the first year.
2006-08-31 22:13:53 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Unless the father is carrying the recessive blue gene, the baby would have dark eyes. If there are light eyes anywhere in the background, the father could be carrying the recessive trait. For example. DH's aunt has dark eyes and her husband has light eyes. Some of their kids have light eyes. Dh has dark eyes, I have light eyes. Both our kids have dark eyes but his brother who also has dark eyes and a light eyed wife has kids with light eyes even though their parents both have dark eyes (dh and his brother). Obviously my dh has the both genes the dominate trait and his brother has a dominate dark with the recessive light (that has to have been carried through one of his parents). Now my kids with their dark eyes have 50% chance of having kids with light eyes if they marry someone with light eyes because they have one dominate gene and one recessive gene. There are statistics but you need a lot of family history info to get those statistics.
2006-08-31 20:42:17 · answer #6 · answered by SabrinaD 3 · 1⤊ 0⤋
Here's how it works...It's more likely that the child will have brown eyes but there is a chance that they will be blue..My mom's eyes are brown and my dad's are blue but I got blue eyes because my mom has the blue eye gene in her family.
2006-08-31 22:13:12 · answer #7 · answered by Heather B. 1 · 0⤊ 0⤋
Well, brown is supposed to be dominate. However, I have brown eyes, my husband has green.
Child 1-hazel eyes
Child 2-blue eyes (yes she's his kid, too)
Child 3-brown eyes
2006-08-31 20:43:10 · answer #8 · answered by Jessie P 6 · 0⤊ 0⤋
Brown is usually the dominant color. However, I have blue, my sons father has brown, and my son has blue green. So it's really a gamble.
2006-08-31 20:38:12 · answer #9 · answered by bellamonster 2 · 1⤊ 0⤋
Both of my daughter ended up with blue eyes and their father has brown. We got lucky.....I am the dominate one! YES! j/k
2006-08-31 21:41:06 · answer #10 · answered by mememe 4 · 0⤊ 0⤋