i got everything, and i mean every single thing from my dad's side of the family. body, height, face, color, personality. my dad is a print of his dad and im a print of my dad's. people say im a female version of him, but prettier. And the one thing i did not get, was my grandfather's green eyes. neither did my dad. why did this happen??
2007-07-20 07:21:24 · 12 answers · asked by ♥ 4 in Science & Mathematics ➔ Biology
This may be because green eyes are recessive. i.e they are present in the genotype but are not shown in the phenotype. They can be passed along from generation to generation, without being seen. This recessive trait needs to be paired with another recessive trait (green eyes) in order for it to be shown in the phenotype.
2007-07-20 07:30:20 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The "colored" eyes are what is called a "recessive" gene. These type of genes don't repeat themselves on every generation, but they rather skip a few generations. Dark eyes, on the other hand, are "dominant" genes, they do come back most of the time. If you take dominant and a recessive, the dominant "wins" And therefore you got the dark eyes. But if you marry someone with colored eyes, there is a chance that at least 1 of every 4 kids you have will get green or blue eyes. (If two recessive genes get combined).
Why do I know this? I have blue eyes that skipped 4 generations, until my great-grandfather. You might want to study Mendel's laws of genetics.
2007-07-20 07:32:55 · answer #2 · answered by Ed S 2 · 0⤊ 0⤋
Just another thing to add to the dominant/recessive discussion going on here:
Because multiple alleles affect eye color, exact colors are rarely passed down - my mother has pale brown eyes, and my dad's are fairly dark; mine are darker than either of theirs. That's because eye color is kind of like height: it's just 5'0'' or 7'0''. Say (just for sake of simplification) that 7'0'' was the maximum possible height, and 5'0'' was the minimum. So if height is controlled by 6 alleles (I have no idea how many it actually is; just picking a number), and a person gets 6 Tall, they'll be 7'0''; if a person has 6 of the recessive tall, they'll be 5'0''. But it's possible to get 5T and 1t, 4T and 2t, 3T and 3t, etc. And you'll notice that people aren't just tall or short; T's dominance is incomplete.
This incomplete dominance causes most of the unusual eye colors (i.e. not straight brown or blue).
Also, if a 3T/3t (we'll say that's 6'0'') marries a 3T/3t, it's possible their kid will be 6T (7'0'') or 6t (5'0'').
There are many components so that phenotypes not expressed in the previous generation can be expressed in the next, or vice versa.
2007-07-20 10:56:12 · answer #3 · answered by grobanite_hyio 2 · 0⤊ 0⤋
Because the green is a recessive gene. You would have to get a green gene from both of your parents. If both of your parents had green eyes then you would have gotten them, but if green eyes don't run in your mom's family and your dad has brown eyes then you have a very slim chance of getting the green eyes.
2007-07-20 07:31:56 · answer #4 · answered by kat 7 · 1⤊ 0⤋
It's just heredity. Did your great grandma have green eyes? If not, then your dad got her eyes. If so, maybe the green eyes skipped a generation. There are so many reasons why you didn't get green eyes. You may have got your mom's, dad's, or grandma's eyes. Just because one person had some color of eyes doesnt mean everyone has to.
2007-07-20 07:30:06 · answer #5 · answered by Anonymous · 1⤊ 1⤋
Green eyes are not as dominate as other eye colors...I have green eyes, but neither one of my sons got them...they got the off blue eyes of their mother...I am having another son in 6 weeks, and my wife has brown eyes...we hope he gets the green, but the green gene is not a dominate as the brown...Most people have Blue and Brown...only a select few, like me have the green...=) Dark brown hair and green eyes...now I am different...
2007-07-20 07:34:32 · answer #6 · answered by Anonymous · 1⤊ 0⤋
When it comes to genetics, there is a 50% chance that you will inherit a trait from one or the other parent. Each trait is independent of all the others, so the 50/50 chance is a gamble each time. It just so happened that you and your dad both missed out on this particular trait.
2007-07-20 08:15:40 · answer #7 · answered by Nike : 1 · 0⤊ 0⤋
Green eyes are a recessive gene.... it's all in how your parent's respective genes mingle at conception. I look just like my Dad too, except I got my Mom's green eyes... my brother and sister both got his blue.
2007-07-20 07:31:36 · answer #8 · answered by Zorlinda 6 · 0⤊ 0⤋
You did not get everything from your dad's side. Exactly half of your genes are from your mother, whether they show up or not. Genetics for eyecolor is relatively simple. If the brown gene shows up, it trumps everything else. You didn't say what color your dad's eyes are or what color yours are, but I'm betting they're brown...
2007-07-20 07:31:29 · answer #9 · answered by mockingbird 7 · 0⤊ 0⤋
but you got your eye sight so you should be happy.
2017-01-30 21:20:06 · answer #10 · answered by ? 1 · 0⤊ 0⤋