Why do I have blue eyes?
I just saw a question that asked what eye color people prefer.
Then I started to think and asked myself why I have blue eyes.
Both my parents have brown eyes; my paternal grandparents have green and brown eyes. My maternal grandparents have brown eyes.
So how come I have blue eyes?
(5 rating, 5 votes, rated)You need to be a registered member to rate this.
Loading...
The inheritance of the eye color is very complex and still not understood in detail. The eye color hangs eg not only from a single one, but from a plurality of genes (polygenic inheritance), which in turn can also have a partial effect on other features such as skin and hair color (pleiotropic inheritance), whose complicated inheritance mechanisms are also not fully known.
In most cases, the gene variants (alleles) are recessive for blue eyes. This means that you have blue eyes only when the allele is homozygous, i.e. inherited from both parents. If there is only one allele for blue eyes, this is called heterozygosity, then the phenotype of the other (dominant) allele prevails, in this case the feature brown eyes. Heterozygous carriers therefore have brown eyes themselves, but because they carry the recessive alleles in themselves for blue eyes, they can inherit it further to their descendants. If both parents are heterozygous and both randomly inherit the recessive allele, the child can therefore get blue eyes, although the parents have both brown eyes.
Random, at least 6% is the possibility that if both parents have brown eyes, the eyes of the child are blue.
It's like that
Inheritance is about probability
So even if your great-great-great-great-great-great-great-great-great-great-great-great-great-great-great-grandfather only had blue eyes, you can still get some.
In addition, it can also be a mutation (so blue eyes have emerged, in the first place)
but can also be completely banana am not a genetic expert
As long as the answer somehow makes sense, everything is good.
Because I can sleep the night without grumping
Kind regards
You must have the genes for it.
These are remixed for every generation.
Please go for "earth eye color".
You should find plenty of material.
best regards
gregor443
This depends not only on the eyes of the parents, but also on the origin.
In hot areas, brown eyes are more common.
In cold again blue.
Blue eyes are always possible, even with Africans this can happen. It's not the other way. If the ancestors had all blue eyes, no browns will come out.
brown eyes are mostly inherited
blue eyes are inherited
I just see that Darwinist has described this very well
Genes, they're recessive. No panic, everything is normal
Your ancestors were Europeans. Western Europe is occupied by the Roman Empire. These are Orientals. Then, of course, they were mixed. From time to time, the European appears. Only white ones have blue eyes.
This works by always having two alleles for a feature.
Are you adopted?