What hair colouring will a child have???

Question:If the parents are both blond and blue eyed???

Best Answer - Chosen by Asker: If the parents are both blond and blue eyed???

The genetics of hair color are not yet firmly established. According to one popular theory, at least two gene pairs control human hair color. One gene, which is a brown/blond pair, has a dominant brown allele and a recessive blond allele. A person with a brown allele will have brown hair; a person with no brown alleles will be blond. This also explains why two brown-haired parents can produce a blond-haired child. The other gene pair is a not-red/red pair, where the not-red allele (which suppresses production of pheomelanin) is dominant and the allele for red hair is recessive. Since the two gene pairs both govern hair color, a person with two copies of the red-haired allele will have red hair, but it will be either auburn or bright reddish orange depending upon whether the first gene pair gives brown or blond hair, respectively.

The two-gene model does not account for all possible shades of brown, blond, or red (for example, platinum blond versus dark blond/light brown), nor does it explain why hair color sometimes darkens with age. Several gene pairs control the light versus dark hair color in a cumulative effect. Therefore, the more of these that are dominant, the darker the hair will be.

Most likely blond but they could take aftha a grandparent.

Perhaps a darker version of blonde or maybe brunetter.....just wait until the york comes out.....but I think it will be a nice hair coloring..

You need to look beyond the parents. What coloring do the grandparents have?

You have a good chance of having a blond, blue eyed child, but it is possible to have a red head or a brunette. Black hair is nearly impossible.

Most likely some shade of blond to brown hair. Red is a tone and not a color. Blond hair with red tones is called strawberry blond, etc. Brown hair with red tones is called auburn. Red, silver or golden tones in the blond to brown hair are possible depending upon the parent's and grandparent's hair.

Eyes will be some shade of blue, grey, or green.

A true brunette is very unlikely.

They could have blond hair and blue eyes but its not a sure thing. My grandmother was one of 13 children and none of them had exactly the same hair and eye combinations.

Most usaully blond unless their is a hidden trait passed down from a grandparent or great grandparent

William R. was on the right track.

Hair color is determined by the amounts of two types of melanin - Eumalanin and Phomelanin.

If you were just considering Eumalinin, you could say that if you had a lot of this, you would have black hair and little of this you would have blond hair. But there is also Phomelanin hence many different hair colors.

The AMOUNT of each you have is actually due to a lot of genes, not just two. So really there is no exact dominant and recessive. If we knew ALL the genes (which we don't) then maybe there could be a table drawn up of all hair shades and their dominance over other hair shades. But we can't do that now.

There is a "commonly accepted" non-scientific order of dominance. Black - Brunette - Blond - Red - White. Of course where Blond ends and Red begins is not easy to say.

So in general, if you have two blond parents, you can have a child of ANY hair color except Black or Brunette. And this "commonly accepted" order does have some loose basis in fact. One could argue that a person with blond hair would have few of the gene types that make Eumelanin thus they would have no opportunity to pass those gene types to their children. But like most things, it is really a probablility. It is much less likely for two blond parents to have a child with black or brunette hair, than a child with blond, red or white hair. But NOT impossible.

Maybe one day all the genes will be known and a true dominance table can be made. But we don't know all the genes that control the types of melanin that determine hair color (and it does change throughout your life) so really, nobody can say for sure.