twins probaility

(16 Posts)
BoringTheBuilder Sat 23-Mar-13 19:33:27

My friend found out she is pregnant and she is wondering if she will have twins...her boyfriend is a twin, boyfriend's dad is a twin and boyfriend's granny is a twin...

Nancy54 Sat 23-Mar-13 19:52:22

As far as I know, the fact that twins are in her bf's family is completely irrelevant. Fraternal twins run down the mother's line because it requires her to ovulate twice (the bloke always sends loads of sperm) and identical twins are just a random occurrence, not hereditary.

BettySuarez Sat 23-Mar-13 20:02:55

Yes it carries down the female line, not male smile

TwoPoundCharityShopShoes Sat 23-Mar-13 20:08:26

Twins run down the fathers side, not mothers smile

TwoPoundCharityShopShoes Sat 23-Mar-13 20:10:54

Sorry, nope you are right, mothers smile

cookielove Sat 23-Mar-13 20:13:10

My Work colleague was told by the Midwife she had a 96% Chance of twins shock

cookielove Sat 23-Mar-13 20:14:46

She had twins on both sides of the family

Nancy54 Sun 24-Mar-13 06:19:22

Well the mw obvs didn't know that it doesn't run down the fathers one then!

cookielove Sun 24-Mar-13 11:20:45

Nancy nope i guess not, she's only pregnant with a solo any way smile

rubyrubyruby Sun 24-Mar-13 11:23:32

Non identical - mothers side
Identical - can be fathers

OzmaofOz Sun 24-Mar-13 12:24:01

I thought identical twins were a fluke of nature ?

rubyrubyruby Sun 24-Mar-13 12:38:40

There are many theories on twins.
One is that some men produce sperm that makes it more likely that the egg will split after fertilisation.
Another theory is that some eggs split before fertilisation from 2 different sperm making these twins not identical, obviously, but more genetically similar than true fraternal twins.

OzmaofOz Tue 26-Mar-13 08:05:41

That's really interesting, I do actually know of a family with 2 sets of ID twins. I always just thought they had both got lucky.
I have heard about the egg spiitting before fertilisation before.
My 2 are fraternal, it took ages to convince one friend that I was pregnant with twins, he didnt believe me because there were no twins in my family. grin

Nancy54 Tue 26-Mar-13 12:47:36

Yeah there's no twins in my family either and I've got fraternal twins.

OzmaofOz Tue 26-Mar-13 13:00:15

Has to start somewhere.

Nancy54 Tue 26-Mar-13 18:54:11

True!

Join the discussion

Join the discussion

Registering is free, easy, and means you can join in the discussion, get discounts, win prizes and lots more.

Register now