Why are some children born with blonde hair and then as they get older it completely disappears and becomes brown?

Similar questions: children born blonde hair older completely disappears brown.

Hair and eye color can darken over time because the respective genes are turned on. The quick answer is that for people to get the traits encoded in their genes, the genes need to be turned on. You can think of a gene as a recipe.

A recipe in a cookbook does you no good until you open the book, get the ingredients and follow the instructions The same is true with our genes. In our analogy, the gene is the recipe and the cookbook is the chromosome (a large collection of recipes). The gene needs to be "read" by the cell in order for it to do what it should.An unread brown or black hair recipe will give you blonde hair.

Scientists don't really understand why specifically the eye and hair color genes sometimes turn on later in life. But they do have a pretty good understanding of what is going on with a much simpler case, lactose intolerance. Let's use lactose intolerance to show how eye and hair color might darken (or lighten) over time.

thetech.org/genetics/ask.php?id=63" rel="nofollow">thetech.org/genetics/ask.php?id=63 I was platinum blonde as a baby ( both parents had dark hair making it a curious sight to others) and it turned dark brown by the time I was in 1st grade. I do still have a streak underneath in the back that never turned. Great question!

Sources: thetech.org/genetics/ask.php?id=63" rel="nofollow">thetech.org/genetics/ask.php?id=63 .

1 Good question. I mean, I was born blonde and stayed blonde throughout my teens. Then, after 20, I was only blonde with the help of my good friend L'Oreal.

Now, at 39, I am dark brown with um...cough cough...platinum blonde highlights. My oldest was born with black hair...he is now a dirty water blonde/light brown. My middle was born with red hair..it turned into a toe headed curly mop top now its more dishwater blonde.My baby girl was born with red peach fuzz...she now has blonde hair as well.

Good question. I mean, I was born blonde and stayed blonde throughout my teens. Then, after 20, I was only blonde with the help of my good friend L'Oreal.

Now, at 39, I am dark brown with um...cough cough...platinum blonde highlights. My oldest was born with black hair...he is now a dirty water blonde/light brown. My middle was born with red hair..it turned into a toe headed curly mop top now its more dishwater blonde.My baby girl was born with red peach fuzz...she now has blonde hair as well.

6 Lactose intolerance happens when the tip of the intestines that make lactase enyzme gets wrecked by gluten...not a gene but maybe genes are involved in all things...Pigment can be caused by tyrosine and copper interacting...maybe a person gets more of these as they age.

Lactose intolerance happens when the tip of the intestines that make lactase enyzme gets wrecked by gluten...not a gene but maybe genes are involved in all things...Pigment can be caused by tyrosine and copper interacting...maybe a person gets more of these as they age.

7 I was blonde until I was five, and my son was until he was about three. Both my parents had dark hair and so did I and my ex. Eyes can change color, too - my son's eyes were a lovely dark royal blue at first, now they're gray.

Did you know all cats are born with blue eyes? .

I was blonde until I was five, and my son was until he was about three. Both my parents had dark hair and so did I and my ex. Eyes can change color, too - my son's eyes were a lovely dark royal blue at first, now they're gray.

Did you know all cats are born with blue eyes?

" "dyed my dark brown hair to a bleach blonde and it came out copper what can I do" "dying bleach blonde hair brown" "I have black and blonde hair (black faded to brown) and want to go all black again what's the best way to do this" "i have light brown-to-dark blonde hair naturally, I have been getting alot of highlights but want to go all over blonde!" "MY HAIR! Blonde-brown-...blonde?

Dyed my dark brown hair to a bleach blonde and it came out copper what can I do.

I have black and blonde hair (black faded to brown) and want to go all black again what's the best way to do this.

I have light brown-to-dark blonde hair naturally, I have been getting alot of highlights but want to go all over blonde!

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.