Genetics? - Page 2

vineyard · Feb 14th, 2010, 13:19 PM

Quote:

Originally Posted by Haren

Genetics is defined as the branch of biology that deals with heredity,especially the mechanisms of hereditary transmission and the variation of inherited characteristics among similar or related organisms.Genetics is the area of biological study concerned with heredity and with the variations between organisms that result from it.

What!? Alrighteythen.

heva510 · Feb 14th, 2010, 16:39 PM

hi there is no history of twins either mine or twins dads side i'm expecting identical twins and this will be no 5 and 6 heather x

Scotsgal24 · Feb 14th, 2010, 17:05 PM

Congratulations heva i had an emergency scan last nite and it looks like there is 2 sacs in my womb. gotta wait until friday to get see what EPAU say and if they will confirm it lol.

trumpetbum · Feb 14th, 2010, 17:29 PM

Scotsgal, my dad is a fraternal twin and I asked about this out of curiousity in my first year of nursing. The link is maternal, I could inherit my grans hyperovulation and have fraternal twins but my dad had no increased chance of having twins despite being a twin himself, his sisters might have had though and so could my daughters. If my dh had fraternal twins in HIS family our chance of having fraternal twins would not be increased.

Identical twins are a spontaneous occurance and not thought to be hereditary.

HTH.

Timid · Feb 21st, 2010, 12:45 PM

Quote:

Originally Posted by trumpetbum

Scotsgal, my dad is a fraternal twin and I asked about this out of curiousity in my first year of nursing. The link is maternal, I could inherit my grans hyperovulation and have fraternal twins but my dad had no increased chance of having twins despite being a twin himself, his sisters might have had though and so could my daughters. If my dh had fraternal twins in HIS family our chance of having fraternal twins would not be increased.

Identical twins are a spontaneous occurance and not thought to be hereditary.

HTH.

I have wondered about this:

My father is a fraternal twin, and his twin sister has had twins.

I don't have any twin siblings, and I am the only girl in my family so I don't think my brothers will have twins.

I don't know whether there is twin history in my mum's side (she's not mentioned anything...) but I can't trace my Dad's mum back enough to see if there were other twins in generations back..

Do you think there's still the possibility that I may have inherited Dad's Mum's genes?

I worry a bit because I'm quite a small person (4'11 tall!) and the thought of two babies freaks me out a little bit

Thanks!

Junebug_CJ · Feb 21st, 2010, 15:17 PM

Hi everyone! I'm a medical geneticist, and can confirm that fraternal twinning is in fact largely based on genetic factors. Identical twinning on the other hand, is not. :-)

midori1999 · Feb 21st, 2010, 16:22 PM

Quote:

Originally Posted by Junebug_CJ

Hi everyone! I'm a medical geneticist, and can confirm that fraternal twinning is in fact largely based on genetic factors. Identical twinning on the other hand, is not. :-)

Thankyou. This is what i thought. However, I have heard that twins cannot be passed via the male side of the family. The only twins in my family are my Dad's Mum's sisters, if that makes sense? So my paternal Granndmother's sisters.

Could that be where mine 'came from'?

Feb 14th, 2010, 16:39 PM	#12
heva510 Other Active BnB Member Join Date: Jan 2010 Location: derbyshire Posts: 661	hi there is no history of twins either mine or twins dads side i'm expecting identical twins and this will be no 5 and 6 heather x

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Feb 14th, 2010, 17:05 PM	#13
Scotsgal24 Mum (Mom) Active BnB Member Join Date: Jan 2010 Location: Dundee, Scotland Posts: 351	Congratulations heva i had an emergency scan last nite and it looks like there is 2 sacs in my womb. gotta wait until friday to get see what EPAU say and if they will confirm it lol.

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Feb 14th, 2010, 17:29 PM	#14
trumpetbum Pregnant (Expecting) BnB Addict Join Date: Dec 2009 Location: Glasvegas Posts: 3,398	Scotsgal, my dad is a fraternal twin and I asked about this out of curiousity in my first year of nursing. The link is maternal, I could inherit my grans hyperovulation and have fraternal twins but my dad had no increased chance of having twins despite being a twin himself, his sisters might have had though and so could my daughters. If my dh had fraternal twins in HIS family our chance of having fraternal twins would not be increased. Identical twins are a spontaneous occurance and not thought to be hereditary. HTH.

Status: Offline

Feb 21st, 2010, 15:17 PM	#16
Junebug_CJ Pregnant (Expecting) BnB Addict Join Date: Oct 2009 Location: Toronto, Canada Posts: 5,802	Hi everyone! I'm a medical geneticist, and can confirm that fraternal twinning is in fact largely based on genetic factors. Identical twinning on the other hand, is not. :-)

Status: Offline

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