Am I only 1% likely to be my Dad's kid?

[wordassociationfootball]

Last night I mentioned affectionately to my sis that I was imagining both our (deceased) parents smiling at us, their blue eyes twinkling. Sis (my only sibling) said Dad had green eyes. I just checked photos and his eyes were definitely blue. I had an odd feeling come over me so Googled whether two blue-eyed parents could have a green eyed (me) kid. 1% possibility. Can anyone gentically savvy increase the odds or tell me what they'd do in my shoes?
Full disclosure: When my Dad died I discovered he'd told my sis he wasn't my dad. I shrugged it off at the time as I'm like him/look like him in some ways... I always thought so anyway. There's a ten year gap between big sis and me. Mum had several miscarriages and they were on the brink of adopting when a pregnancy (me) stuck. I know that my mum had been in love with the husband of a couple they knew.
.... Holy mack mack, I cant believe how in denial I've been for so long about this. Thoughts please!

You could do a dna test with your sister to see if she is 100% or 50% match

The reason I shrugged off what Dad said was that he could be... unreliable. And dramatic.

@fourelementary true.... except I feel I would find a bunch of further half sibs (Dad was a committed philanderer) and I'd probably rather not go there.

Do you want to know?

why would you find other half siblings if you did a dan match with your sister? You just send samples in for both of you, and then see if you are 100 sisters or just 50% sisters. No comparison with wider DNA sources.

I don't know anything about green eyes. But I do know that in order to have blue eyes, you have to have blue genes. Which means you will give a blue gene to a child. If both parents have blue eyes, I assume that means therefore that any child would have 2 blue genes, and therefore blue eyes. But I do know that eye colour genetics can be weird so I would totally believe there's a possibility of green eyes.

I was under the impression that green eyes are just a different shade of blue eyes.
For example I have green eyes and my partner had brown eyes.

Our Dc has very very blue eyes. I had to take her to ophthalmologist when she was small. I asked him about it and said "isn't it strange that she has blue eyes" and he looked at mine and said "why would you say that when you have green eyes and that's just a slightly different version of blue eyes".

I haven't explained that very well but you probably catch my drift.

Oh and for clarity. - we have had DNA tests so there is no doubt of paternity.

I think you are misunderstanding the stats? It doesnt mean that there's a 1% chance of your dad being your dad, it means that of 100 blue eyed couples, one of them will have a green eyed child.

If you want to know do a dna test

My dad had blue eyes, my mum's are quite dark brown, mine are hazel/greenish. It doesn't seem particularly unlikely to me, and I really look like my dad anyway.

What colour eyes do your grandparents have ?
Sometimes genes jump a generation and the grandparents genes are passed down.
I have 3 kids with my ex. We are both brown eyed but our kids have blue, green and brown. We both have a blue eyed parent and I learned at school that brown was dominant but the grandparents genes must have been passed down.
Maybe you are the 1% (no idea if that number is correct)? Like they say in Jurassic Park, nature finds a way.

Youve based it mainly on eye colour, when in reality you’ve got other doubts.

I have green eyes; neither of my parents do. My son has blue eyes and both his parents have green eyes. In fact 3 out of 4 of his grandparents have brown eyes.

Would it make any difference to you to find out?

This.

I have brown eyes. My DH has green eyes. Our kids have blue eyes. It happens.

It's quite possible as you and your sister remember your Dad's eye colour differently that he had blue/green eyes- hazel eyes.

Depending on variables they can appear to change colour.

I have a friend whose eye colour appears to change and they can look blue in photos.

My dad has grey eyes, my mum brown. I’ve got dark blue eyes. They’re both my parents… sadly.

OP my mum has green eyes and both her parents had blue. I know they were definitely her parents as I've done ancestry and share DNA with descendents of both their ancestors.

I'd concentrate more on the fact he verbalised that he isn't your father.

If you want an answer then you need to do a dna test with your sister. You won't find other half siblings unless you go looking for them. You'd only be comparing the dna of you and your sibling.

It wouldn't prove that you're not your dad's child, but it would prove whether or not you and your sister share the same parents.

As your doubts aren’t just to do with eye colour, I think a dna test might be the best thing .

@Auntieobem and @Nolongera You are right. I AM misunderstanding the stats. This helps, thanks.

@NotLactoseFree thanks for clarifying about the DNA test with sis.

@dolorsit they certainly do look blue in photos. But I think they definitely were so no surprise there : )

One of my DC has the kind of eye colour that looks different in different lights, or even according to what he's wearing. Sometimes they look green, impossible according to some online charts, but he's definitely ours! An aunt on DH's side and a niece on mine have green eyes that are more consistent in colour. Genetics is far more complex that A plus B equals AB or BA.

In case your interested Ancestry are on a special offer at the mo.

Yes this. You’re misunderstanding how genetics works. If you were just basing it on this I’d think it was a bit barmy but given the other things you've said I can see why you’re feeling doubtful.

The question is - do you want to know and what happens if he wasn’t your dad? What then?

Eye colour isn't determined by a single gene so if you have lots of characteristics like your dad including looking like him then you are likely unfortunately his.

Oh and if the man bought you up he is your dad, though he may not be your biological father.

I have green eyes my ex had blue eyes and our ds has dark brown eyes!!

My dad had brown eyes, Mum had blue - 1 sibling had blue, 2 had brown, I've got green

My husband has got blue, mine are green, 1 child has blue, the other brown.

I think you're over-thinking it all.