To wonder why DS has brown eyes

[Dinobab]

If DP has hazel (green with brkwn in the middle and bits of blueish colour) and I have light green? How'd that happen?/ I thought brown was dominant so if we had brown genes we would have brown eyes?

[IndomitabIe]

I hope it's already been mentioned, but reality is more complex than GCSE level genetics would have you believe!

(Every year I start that section with a disclaimer that this is simplified and you shouldn't base suspicions of adoption on it)

[aprilanne]

my hubby and i have blue eyes my eldest son dark brown youngest 2 sons blue .but all my family parents grandparents were all brown .my hubby has black hair you expect that to be dominate to but my sons all blonde like me .

[MrsTedCrilly]

My sis and bro in law both have very dark brown eyes.. Their daughters have the lightest blue I've ever seen! I love genes

[BeautifulLiar]

Me - greeny brown
DH - bright blue
DD1 - bright blue
DD2 - grey

Can't wait to see what colour new baby's eye colour will be!

[Narp]

The eye colour you describe doesn't sound 'brown' to me. (I love brown eyes)

Me: green/hazel
DH: green/blue
DS1: grey/blue
DS2: green

[SmillasSenseOfSnow]

He has one eye that's a quarter brown and three quarters green, and the other one's the exact opposite!

Much cooler than my eyes.

[EternalDalmatian]

Me, dh and ds1 all have hazel-green eyes. All of our families are pretty much brown/hazel/couple of greens. Ds2 has the brightest, most piercing blue eyes I've ever seen. The only one out of both of our families to have blue eyes, it seems really odd.

[oriol]

all my family blue eyed for generations, DH green eyed, his parents blue and green, our children :
DD1 brown!
DD2: blue- green
DS 1; green
DS2: blue- green.
DD2 and DS2 had bright blue eyes until 5 years old, DD1 had green, then hazel and at about 4 years old - brown.

[BathshebaDarkstone]

Umbongo my dad has that. He has one eye that's a quarter brown and three quarters green, and the other one's the exact opposite!

[UmbongoUnchained]

I have Hetrochromia, one brown eye one green. My ex has pale blue eyes and our daughters eyes are bright green.

[BathshebaDarkstone]

Green's dominant over brown I think. My eyes are brown, XH's are hazel, DD1's are blue. She's nearly 24 so I doubt they'll change colour! We think she's a throwback!

[1pink4blue]

I have very dark brown hair and dark brown eyes,dh has brown hair and green eyes.
Ds1 ginger hair and blue eyes
Ds2 brown hair and light brown eyes they look almost a gold colour
Ds3 ginger hair and dark brown eyes
Ds4 light brown hair and blue eyes
Dd1 light brown hair and blue eyes at the moment she is only 7 months

[grumpysquash]

Green is generally an allelic variant of blue (i.e. modified blue). Hazel is often a variant of brown.
But the green and hazel spectra overlap quite a bit......just to confuse matters

[MaidOfStars]

i soooo wanted blue eyes and dark hair, I think its lovely

My husband has black hair and very bright blue eyes

[StepAwayFromTheEcclesCakes]

DH has gingery brown hair and light brown eyes, I have very dark hair and brown eyes. DS1 has strawberry blonde hair and blue eyes, Ds2 has dark brown hair and brown eyes. family history shows that both grandads on my side had auburn hair and grandad on DH's side had red hair, my mum had blue eyes and DB has dark hair and blue eyes as i soooo wanted blue eyes and dark hair, I think its lovely.

[ouryve]

Death, blue eyed offspring of 2 brown eyed parents are not uncommon and are easily explained by the simplified GCSE version - it's the other way around which is very rare.

[shutupanddance]

I have 2 brown eyed dcs, 1 blue eyed and 1 green. My dh and I have hazel eyes.

[DeathstarDame]

YANBU OP, my brother in laws son has blue eyes where as both he and the mother have brown. I wondered myself but then DP explained its much more complex than that.

[MaidOfStars]

The main "gene" controlling eye colour (which we'll separate into "brown" and "blue", for ease), is actually two genes, albeit very close together.

The first gene is called Make Brown.
The second gene is called Turn The "Make Brown" Gene On.

(Note: these are not the actual gene names )

You can have DNA changes in Make Brown, such that it doesn't actually make brown pigment, hence blue eyes.

You can have DNA changes in Turn The "Make Brown" Gene On, such that Make Brown is never activated to make brown pigment, hence blue eyes.

If...
Parent Blue Eye 1 has a DNA change in Make Brown but a working copy of Turn The "Make Brown" Gene On
and...
Parent Blue Eye 2 has a working copy of Make Brown but a DNA change in Turn The "Make Brown" Gene On
...it is perfectly possible for them to have a child with working copies of both Make Brown and Turn The "Make Brown" Gene On

But as others have said, it more complicated than that.

[ouryve]

I'm thinking that green stain is a pretty forceful one, as DH has grey-green eyes, DS1 has green-grey eyes and DS2 has greenish grey eyes!

Mine are deep deep blue.

[CurlyBlueberry]

My husband comes from a blue-eyed family (blue-eyed mother, father, sister and brother). He has mostly green eyes with a few flecks of brown. Other than the eyes there is a strong family resemblance.

I have brown eyes (am Asian) and of my two children, one is brown eyed and the other had blue eyes for the first year and now (at 13 months) has eyes like her father. Whether they'll change I don't know. As an Asian person though I never expected a blue-eyed baby!

[LovelyFriend]

Green eyes are genetically blue eyes but with a stain of sorts over the top. Some "brown" eyes can be genetically blue too.

[ReadtheSmallPrint]

In the simplest terms, and assuming only one gene involved:

B = 'non blue' gene (dominant)
b = blue gene (recessive)

Mother's genes = Bb - eyes are not blue
Father's genes = Bb - eyes are not blue

Baby can inherit any combinaiton of BB (not bue), Bb (not blue) or bb (blue) from those combinations.

In reality, there are lots of genes responsible for eye colour

[SlaggyIsland]

My father had hazel eyes and my mother blue. I've got bluey-green eyes, however both my brothers have got dark brown eyes (and lovely thick lashes like camels, the bastards).

[AllMyBestFriendsAreMetalheads]

Bold fail