Why am I the only one in my family with blonde hair?

[Khakicrocs]

My parents and brother are all dark haired. I have blonde hair and blue eyes. My dad does have blue eyes, but my mum and brother have brown. But their hair is all totally different to mine.
I used to think I was adopted when growing up. My son now has white blonde hair so it’s obviously a strong gene from me (my partner has brown hair).

i'm dark blone...their dad blonde.. my DD's, i had blone straight hair and the other has curly ginger hair?? and they are both our bio children... the ginger is a throw back as they call it.. someone back in the past must have had ginger curly hair

I'm the only one with green eyes in mine!
Dads are blue, mums brown

One of my sons in blond. Both his parents have red hair. No blond on my side of the family at all. I'm still surprised and he's over 30!

My mum was blue eyed white blonde, dad dark and I'm dark brown thick and wavy with hazel eyes, sis medium brown and thin and straight with pale blue eyes, other sis wavy light brown with brown eyes.
My kids are auburn curly, or mid brown straight. Son hazel, daughter dark brown (like her Dad).
My DD is also so much like my sister, who I do not resemble at all, it's spooky. Genes are fascinating!

You could always do a DNA test via Ancestry if you are seriously wondering if you might not be biologically related to one or both of your parents. (You then have to work it out from various cousin etc matches)

I have 2 sisters (same mum, different dad) they have the same dad as each other and one of them is ginger and pale with brown eyes and the other one is olive skinned, brown hair and blue eyes.

One of my sons has ginger hair the other dark blonde which will probably end up brown. Genes are weird lol

DH and I both have brown hair. DSD and dd2 also both have brown hair. DD1 is blonde.

Quite. We are two brown eyed, right-handed parents of two blue eyed, left -handed children. One of whom is strawberry blond with a ginger beard.

My DF had very dark brown, almost black hair, my DM had mid-brown. My sibling has mid-brown hair and I am blonde. Of my own children, two were blond until their teens then went darker, and one started off ginger but is now dark brown. I thought he might stay ginger as there's lots of red hair in both my family and DH's. DH's hair was very dark brown, almost black before he went grey.

Two of my children have blue eyes, even though mine are hazel and DH's are green. I had four blue-eyed grandparents. There's a lot of recessive genes popping up in my family. DS1's eyes are exactly the same grey/blue as his great grandmother's. We are all very pale skinned, apart from DS1 who goes golden in the sun.

Same here

Mum has lightish brown hair, dad has ginger ish brown hair. Brother has brown hair, I'm blonde. It was really blonde till I was about 35 too

Both kids are blonde, albeit DS is darker blonde than DD

My parents both have brown eyes.
My brother & sister have green eyes.
I have brown eyes.
My parents’ camera broke when my sister was a tiny baby and they couldn’t afford to fix it or replace it.
My brother spent our childhood telling her that she wasn’t in any of the photos because she was adopted.
Neither of my siblings resembles either of our parents, but I look exactly like my mother.
Genetics are weird. Kids are arseholes.

Genetics are more complicated than you learn for GCSE, which is why you can have twins where one is white and the other is black.

My mum always had mousy hair, until she lost it due to chemo, then it grew back black, then more chemo took that away and it came back mousy.

I know how you feel @Khakicrocs. My Dad’s family is descended from Portuguese and Jamaican Sephardi Jews, ergo, very dark. Mum’s family is a mixture of French & Scottish, but there is a rogue coeliac disease gene which has been handed through from the Vikings and guess who got lucky? All my family except for one cousin and I (he is two weeks younger and they call us the twins) are super dark. My brother is racially profiled every time he goes to the airport as he looks very middle-eastern. I am very blonde with light blue eyes but have pale olive skin that would tan easily if I wasn’t a photophobic Aussie. My two DD’s are both blue-eyed blondes and my son is green-eyed and fair too. I expected to go dark as I matured because that is what I was told, but still have light blonde hair that is now getting “blonder” with age.

My whole family of origin have Celtic colouring - dark brown or black hair, blue or green eyes. My DH is black. One of our DC is blonde! Genes are a funny thing.

Is this genuinely of interest to anyone? 🤔

Clearly, otherwise the OP wouldn't have had any replies. Why bother responding if it's so boring for you?

Me too, but all my grandparents, aunts, uncles, and all of my family (except for my cousin) look NOTHING like me, I have blonde straight (sometimes wavy) hair and hazel eyes. My whole family either has brown or black hair and brown eyes,

how does that work if you have 2 blonde, 2 gingers and a Brunette? That’s my kids. Their dad and I were both blonde kids who went dark as adults. One ginger and the brunette are twins.

There are lots of genes that affect hair colour @TheOriginalEmu.
https://medlineplus.gov/genetics/understanding/traits/haircolor/

My DM had dark brown hair when I was born, it's much darker than mine which is light brown, but when she was a child she was very blonde, blonder than I was at the same age.

My mum's got blonde hair, my Dad had dark hair, my sister has dark hair and I have red hair.

My husband has dark hair. DS has red hair. My sister's husband has mousey hair. One of their daughters has red hair.

My son, my niece and I all have a very particular shade of red hair - a dark auburn rather than ginger, and we all have the same shade of brown eyes.

Genes are interesting!

I have dark brown eyes and dark brown hair, DH has black hair and dark brown eyes. DS has grey eyes and dark hair, DD has ash blonde hair and bright blue eyes!

DH is typical Scandi stock (he's Norwegian) - his whole family is blonde and blue eyed, apart from him. I'm Irish with dark haired and dark eyed parents. Sister and I have the same colouring, but our brother has green eyes and light brown hair that was blonde until he was about 20!

I find it all interesting!

My daughter was born with red hair, which has turned russet brown as she's got older. No-one else is a redhead, though her Grandad had red in his beard, so we think it's s throwback.

Does anyone know why a lot of people who are born with blonde hair go darker as they get older?

I know this is a bit of a zombie but genetics are more complicated than just one gene from each parent for hair colour.

The one that fascinates me is that chemo can change hair colour. My mum was always blond / mousy brown until she and chemo and lost it.

It then grew back black and after another set of chemo grew back her usual colour. Some people get curls or lose curls as well.

I had to take a drug called methotrexate which is chemo but it wasn't for cancer. My dead straight hair now has waves.