My hear is curly
and i have hazel eyes
what are my genes for hair type and eye colour !??
thanks :)
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mum has blue eyes, wavy hair not curley dad has brown eyes and quite straight hair
my hair is ringlets Ok this should be fun! It's just high school biology (in Greece, anyway) !!
You've got your mother's "blue-eyes" gene but it didn't show because "brown-eyes" gene is much stronger.Ok let me explain this is how it works:
The general rule is blue+blue=blue
blue+brown=brown
brown+brown=brown etc
Eye color comes from a combination of two black and yellow pigments called melanin in the iris of your eye. If you have no melanin in the front part of your iris, you have blue eyes. An increasing proportion of the yellow melanin, in combination with the black melanin, results in shades of colors between brown and blue, including green and hazel.
What we are taught in high school biology is generally true, brown eye genes are dominant over green eye genes which are both dominant over blue eye genes. However, because many genes are required to make each of the yellow and black pigments, there is a way called genetic compensation to get brown or green eyes from blue-eyed parents.
The best way to illustrate how this might happen is with an example. Let鈥檚 say there is a genetic pathway made up of four genes (cleverly named A, B, C, and D) that are needed to make brown eyes. A mutation in both copies of any one of these genes results in blue eyes (these mutations are denoted with lower case letters, a, b, c, and d).
http://www.thetech.org/genetics/images/a...
Now let鈥檚 say that dad has blue eyes because of a mutation in both his copies of gene A and mom because of a mutation in both her copies of gene D. As I am sure you know, we have two copies of each gene, one from our mom and one from our dad. If either parent gives you a brown version of a gene, it will be dominant over the blue copy.
Let鈥檚 suppose that mom gives you a brown copy of gene A and dad gives you a brown copy of gene D. What color eyes would you have? Brown. (The same argument works for green eyes as well.)
Another common genetic process that could be responsible for brown eyes from blue-eyed parents is called recombination. When eggs and sperm are made, only one of a pair of chromosomes gets put into an egg or sperm. Before this happens, there is a bunch of DNA swapping that goes on between the pair of chromosomes. Sometimes when the DNA is swapped or recombined, DNA mutations get fixed.
Again, an example can show how this might work. Imagine dad has blue eyes because of a mutation at the front end of one copy of his eye color gene and a different mutation at the back end of the other copy of the gene. Each gene has a single mutation but at different places in the gene.
http://www.thetech.org/genetics/images/a...
Now imagine that when his sperm is being made, the middle part of the eye color gene is switched between the two genes resulting in one brown eye gene and one blue eye gene with two mutations. Now dad can produce a brown-eyed child. (Again, the same argument works for a green eye gene as well.)
Another way to get brown eyes from blue-eyed parents is for something in the environment to affect the eye color gene. Even though there are well-documented cases in which this happens, the reasons for it are pretty poorly understood.
There are cases, for example, of certain drugs changing a person鈥檚 eye color鈥攖he environment clearly has changed what happened to eye color in this case. Another possibility is that a gene is on or off for some reversible reason instead of an irreversible change in DNA. In this case, something in the environment reverses the change, turning the eye color gene back on or off.
Oh and maybe you should try this one, it's fun!!!
http://museum.thetech.org/ugenetics/eyeC...
Mine was 70% green and 30% blue (My eyes are blue and my bf's green)
There.Hope I helped!! any of the above ! geez a zillion genetics are possible here Yeah, you gave us pretty much like, nothing to go on. well the data that u have provided cannot be used to find the genes.....
but definetly the following genetic information can be given.....
1. ur parents genes for hair color and eye color are not dominant
genes..... as they dont show in ur appearence.
2. Their genes form a recombinant gene which u have inherited from them.......
this recombination marks ur appearence........ |
