random thinking
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Topic: random thinking
Posted By: NovemberMum
Subject: random thinking
Date Posted: 22 December 2010 at 4:10pm
so you hear of couples where they have all boys or all girls eg 5 boys or 4 girls etc.
and yets despite trying all the so called methods to get a particular gender they always end up with the same gender.
so I am wonder if it is possible that a man could carry mostly X sperm or Y sperm. so that no matter which method they try they will always get the same gender
anywy thats just my random thought for the day
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Replies:
Posted By: MyLilSquishy
Date Posted: 22 December 2010 at 4:43pm
interesting thought!
ive heard about some 'study' done... where it tends to be the woman that determines boy/girl.... a 'dominant and assertive (they said bossy) woman' is more likely to have male children as the testosterone in the sperm with the testerone released in the egg by the dominant woman will likely create a male. whereas a timid/shy/less assertive woman is more likely to have a girl (something about evolution and men wearing the pants)
which i think is a whole load of BS. but then again i am a dominant, assertive (sometimes bossy ) woman with a boy hehe
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Posted By: NovemberMum
Date Posted: 22 December 2010 at 5:00pm
lol wonder what that makes mums with one of each?
a shy dominant woman?
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Posted By: amme_eilyk
Date Posted: 22 December 2010 at 5:09pm
I dont believe in the woman determining the sex. Guys have a 50/50 mix of X and Y sperm as sperm are basically 1/2 of a normal cell, so from each sex cell you get 1 X and 1 Y. You have a 50% chance of having a girl/boy per pregnancy so if you have four kids there is a 6% chance of having all girls or all boys assuming that there is no genetic problems. It is possible if the female has problems with one or both of her X chromosomes that boys are not viable since they dont have the back up X that girls have. Which can reduce the chance of a boy to about 12.5%.
(can you tell i'm majoring in genetics lol)
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Posted By: AandCsmum
Date Posted: 22 December 2010 at 5:15pm
LMAO I'm not shy & I had a girl first! I put it all down to timing...girl "She'll be right" (obviously not lol) boy - try & try & try again on specific dates each month.
Very interesting kylie
------------- Kel
http://lilypie.com">
A = 01.02.04 & C = 16.01.09 & G = 30.03.12
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Posted By: Nutella
Date Posted: 22 December 2010 at 5:45pm
Interesting, I do sometimes wonder with people that try for a sex how often it comes right for them.
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Posted By: Plushie
Date Posted: 22 December 2010 at 5:50pm
Isnt there something about boy sperm being slower and stronger and girl sperm being quicker so if you BD a few days before ovulation the boy sperm will be alive swimming onwards to get the egg but if you BD on the day of ovulation the girl sperm will beat the boy to the egg?
Or am i crazy? That sounds pretty crazy!
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Posted By: TrinaL
Date Posted: 22 December 2010 at 6:27pm
Not sure how true this is but a guy at work told me ( and really it was TMI from a guy I one work with and 2 has kids my age ) that when he was Lincoln Uni many many years ago and they were doing progeny testing on bulls as you do, they decided to test themselves. Anyway his was that he was unlikely to have daughters and he didn't just 3 boys.
It makes sense the testing on bulls and why they would do it so I suppose the same theory would work on humans and some men are predisposed to have only one gender.
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Posted By: T_Rex
Date Posted: 22 December 2010 at 7:06pm
Kylie, thats true in principal, however, the x-carrying and the y-carrying sperm are very slightly different - that's the basis for *drafting* them in the semen sexing machines they have for bulls (so you can order a boy or a girl calf when you inseminate your cows), so in the same way, they can respond differently to different uterine environments. That's the basis for many of the theories of influencing which gender you get.
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Posted By: Plushie
Date Posted: 22 December 2010 at 8:35pm
LOL at deciding to test himself!
Can you sex-select if you're doing IVF. Obviously not ethically and in reality but in theory?
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Posted By: Whateversville
Date Posted: 22 December 2010 at 8:46pm
I always thought that it was based on the father and he was from a family of mostly/all boys you'd most likey mirror it with your kids. So when I ot UTD to a guy with only brothers I figured from day dot it was a boy - and it was lol probably rubbish .. he's having another baby with some1 else now so will be interesting to see if they have a boy too lol
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Posted By: High9
Date Posted: 22 December 2010 at 9:08pm
amme_eilyk wrote:
I dont believe in the woman determining the sex. Guys have a 50/50 mix of X and Y sperm as sperm are basically 1/2 of a normal cell, so from each sex cell you get 1 X and 1 Y. You have a 50% chance of having a girl/boy per pregnancy so if you have four kids there is a 6% chance of having all girls or all boys assuming that there is no genetic problems. It is possible if the female has problems with one or both of her X chromosomes that boys are not viable since they dont have the back up X that girls have. Which can reduce the chance of a boy to about 12.5%.
(can you tell i'm majoring in genetics lol) |
This is what our science teacher told us in 7th for sci.
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Posted By: _H_
Date Posted: 22 December 2010 at 9:33pm
bowie wrote:
LOL at deciding to test himself!
Can you sex-select if you're doing IVF. Obviously not ethically and in reality but in theory? |
I would be interested to know this as well but to be honest at this point i dont care!
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Posted By: lil_lease
Date Posted: 22 December 2010 at 9:42pm
Technically I think you CAN sex-select via IVF as you can do other types of genetic testing once the embryo gets to the 8 cell stage (I think)
It would just be a case of taking one of the cells and DNA testing it to determine gender then implanting only embryos of the desired gender.
Ethically quite questionable ground.
------------- Antony, gone but never forgotten 2-4-2010
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Posted By: Nothing
Date Posted: 22 December 2010 at 10:10pm
I know someone who had a boy, then years later got together with another guy and went on to have 5 girls! She had quite a few miscarraiges in between the girls and the doctors reckon that her partner is not compatiable with her for making boys.
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Posted By: High9
Date Posted: 22 December 2010 at 10:12pm
DPs FIL side is mainly all boys, MIL 50/50 and my side is mostly girls.
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Posted By: rorylex
Date Posted: 22 December 2010 at 10:25pm
well DH has a girl from a previous relationship and together we have 4boys.
I think DH is the one wanting a girl more than i am.
we are planning to ttc evenually, but i have given up on trying for a girl, we didnt really do anything to "sway" for a girl with any of our boys.
but i have often thought about it myself. wondering if all these "methods" actually work.
------------- Mummy to 4 boys
Samuel - 18.6.05
Rory - 15.7.06
Mason - 13.06.08
Emmett - 24.01.10
Baby #5 - cooking
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Posted By: mrsturtle
Date Posted: 22 December 2010 at 10:41pm
Hmm this is interesting a friend and i have been discussing how to get the opposite sex she has 3 boys and i have 2 girls next time we have said we should just swap lol.
Im not sure many would discribe me as quiet/shy yet i only have girls.
Im just starting to read up on all the old wifes tales on how to help get a particular sex.
I have a friend who has 6 girls! but from 2 different fathers she just tells everyone she only makes girls.
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Posted By: Ella1
Date Posted: 22 December 2010 at 11:00pm
Pillow_Fight wrote:
I always thought that it was based on the father and he was from a family of mostly/all boys you'd most likey mirror it with your kids. So when I ot UTD to a guy with only brothers I figured from day dot it was a boy - and it was lol probably rubbish .. he's having another baby with some1 else now so will be interesting to see if they have a boy too lol |
Sorry, but I don't think that theory is right.
My husband is from a family of only boys, and so is his dad. But we have a girl ....
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Posted By: High9
Date Posted: 22 December 2010 at 11:10pm
Rorylex, surely the next one should be a girl!!
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Posted By: NovemberMum
Date Posted: 22 December 2010 at 11:12pm
my husband has 1 brother
his brother has 2 sons
my husband's dad has 2 brothesr and 1 sister one of his brothers is gay and they ahve no children his other brother has 2 sons. his sister has 1 of each.
our daughter was the first born girl (with DH's last name) since 1949.
I was mostly expecting when I was pregnant with #1 that I would be hving a boy since my inlas have two sons and their first two granchildren were boys.
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Posted By: Kalimirella
Date Posted: 22 December 2010 at 11:42pm
Pillow_Fight wrote:
I always thought that it was based on the father and he was from a family of mostly/all boys you'd most likey mirror it with your kids. So when I ot UTD to a guy with only brothers I figured from day dot it was a boy - and it was lol probably rubbish .. he's having another baby with some1 else now so will be interesting to see if they have a boy too lol |
LOL to this, funnily enough my DP comes from a family of 4 boys. So this should be true for him right? Yet here we are with a lovely little girl, and i have a feeling so is the next one, though a boy would be a nice surprise.
------------- Kiara is 3 and Teagan is 2, now we're expecting our long awaited 3rd! http://lilypie.com" rel="nofollow">
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Posted By: My3Sons
Date Posted: 26 December 2010 at 8:46am
Posted By: Angs1982
Date Posted: 26 December 2010 at 8:55pm
Two girls two boys in both my family and DH's family.
We have a girl and my money is on the next to be a boy........................
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Posted By: myonlineself
Date Posted: 26 December 2010 at 9:41pm
I always thought that men can produce sperm predominantly with either the x or the y - not necessarily 50/50 - with some men only having X or only having Y sperm...(or at least much higher proportion of one than the other)
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Posted By: Plushie
Date Posted: 26 December 2010 at 10:34pm
I had heard something like that, mostly in relation to Henry VIII having wonky boy sperm hence his inability to make more then just one (rather unwell and sickly) boy despite running through the wives trying.
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Posted By: TheKelly
Date Posted: 27 December 2010 at 1:28pm
Pillow_Fight wrote:
I always thought that it was based on the father and he was from a family of mostly/all boys you'd most likey mirror it with your kids. So when I ot UTD to a guy with only brothers I figured from day dot it was a boy - and it was lol probably rubbish .. he's having another baby with some1 else now so will be interesting to see if they have a boy too lol |
My DH is one of 4 boys,this baby is a girl
Basically, its up to both parents, the male produces the sperm ,but it also depends on what the mother is "favouring " at that time, X or Y.
I don't know, I have a girl, and a boy, and im UTD with another girl, I didn't do anything special for any of them, just had sex,didn't plan it or time it to be a few days before ovulation etc, hell my first wasn't planned at all.
But I always knew I would have girl boy girl, and what do you know? I was right
Oh and my eldest daughter's dad has 3 boys with his wife, but he can clearly "create" girls cos mine is evidence of that
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Posted By: Aquarius
Date Posted: 29 December 2010 at 9:37am
the man determines the sex....
we have two XX
men have XY
we provide one X and whatever they shot....bingo
------------- http://www.magicalkingdoms.com/timers/">
mum to mr 16 & mr 10
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Posted By: TheKelly
Date Posted: 29 December 2010 at 10:06am
Thats what I always thought! and I like that idea ... that its entirely up to the man, but then every pregnancy book I have read says that it also depends what chromosome the mother is favoring at that time, and that it can be influenced by diet etc
Typical,the books can't just let the man take responsibility for something
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Posted By: Kazper
Date Posted: 29 December 2010 at 10:40am
Just coming in on the ivf question and sex selecting.
The only way it would ever be considered in selecting the sex is if it there was a genetic disorder with having either boy or girl in the family. When falling pregnant with ivf you still won't know the actual sex until the 20 week scan like all other couples.
The sex is also determined from the man's sperm and not the embryo.
------------- http://www.fertilityfriend.com/home/545141" rel="nofollow">

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Posted By: AngieBabe
Date Posted: 29 December 2010 at 11:37am
bowie wrote:
I had heard something like that, mostly in relation to Henry VIII having wonky boy sperm hence his inability to make more then just one (rather unwell and sickly) boy despite running through the wives trying. |
A wee bit OT but from what I can recall from my reading on Henry VIII and the whole Tudor thing - a lot of his issues with fertility were because he had syphillus... and subsequently passed this onto his progeny because he also infected his wives.
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Posted By: Kalimirella
Date Posted: 29 December 2010 at 11:52am
Hmm something I read the other day, apparently the sperm have an electrical charge, one slightly positive the other slightly negative. The egge can change polarity and therefore "chooses" which one it wants to fertilise it! Just thought you guys might find that interesting. The men shoot em up and the egg chooses :P
Of course if there are only predominantly x then when the egg reaches the right polarity you will have a girl and vice versa.
------------- Kiara is 3 and Teagan is 2, now we're expecting our long awaited 3rd! http://lilypie.com" rel="nofollow">
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Posted By: babylove
Date Posted: 29 December 2010 at 3:19pm
I have my 4yr old asking me for a baby sister, he has 3 brothers and a half sister, I told him he already has a sister but he said noo a baby sister, im like sory hunny mummy only makes boy babys ask daddy.
of course a girl would be lovely but i doubt it will happen.
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Posted By: Whateversville
Date Posted: 14 January 2011 at 10:33pm
Pillow_Fight wrote:
I always thought that it was based on the father and he was from a family of mostly/all boys you'd most likey mirror it with your kids. So when I ot UTD to a guy with only brothers I figured from day dot it was a boy - and it was lol probably rubbish .. he's having another baby with some1 else now so will be interesting to see if they have a boy too lol |
Just wanted to bump this and say they are having a boy.
Still think this theory is rubbish..Just thought it was interesting.
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Posted By: Raspberryjam
Date Posted: 14 January 2011 at 10:51pm
bowie wrote:
Isnt there something about boy sperm being slower and stronger and girl sperm being quicker so if you BD a few days before ovulation the boy sperm will be alive swimming onwards to get the egg but if you BD on the day of ovulation the girl sperm will beat the boy to the egg?
Or am i crazy? That sounds pretty crazy! |
Thats what I read too, I must have got the fast ones twice!
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Posted By: busymum
Date Posted: 15 January 2011 at 9:55am
I find this all very curious too. I'm pg with our 5th girl. A lot of ppl say it must be time for a boy but reality seems to indicate that you have three shots and that's almost it. I know a few women who have always m/c boys and only carried girls to term, so I wonder if there may be some incompatability. But it's only guesses. Mine and DH's family are predominantly boys but his mother is one of 2 girls and my mum is one of 4 girls and a boy...so I wonder if maybe it skips generations?
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Posted By: mummy_becks
Date Posted: 15 January 2011 at 10:31pm
We used to take the pi** out of a friend as he could only produce girls and we would say he wasn't man enough to produce boys - some people I still think this is actually true for. My mum couldn't carry boys, so she says. She had a misscarriage between my 2 younger sisters and is sure it was a boy. I had boys I think I couldn't carry girls as when I had a MC I was sure it was a girl. I am sure it is one of those OWT's that we will never know. However we will still take the pi** out of our friend.
------------- I was a puree feeder, forward facing, cot sleeping, pram pushing kind of Mum... and my kids survived!
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Posted By: Peanut
Date Posted: 16 January 2011 at 8:05am
I was reading articles on this prior to having children. I have a medical background so these studies were all medical journal published.
I find it iinteresting that most studeis focus on producing boys!
I read a great study that suggested that although the first time you conceive you have a 50/50 chance of having either sex, if you have a boy first time your chances are then 51/49 of having a boy a second time, and it keeps going. This study focussed on boys so not sure its the same for girls.
Also read a study similar to sqishy mums one about woman working in male dominated environments tend to have higher testerone which leads to them producing boys. As a side note, I work in a boys school which also has a high level of males teachers. All the female staff that conceived while teaching at the school had boys except one who tested for other reasons and its howed she had very high levels of oestrogen.
Another study I read which I don't belive but gave me a giggle was that if a woman has all boys she has a higher chance of one being gay...reallly, stats would have shown that! ALthough this study said it would be the 4th or youngest boy due to testorone depleting in the womans system.
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Posted By: freckle
Date Posted: 16 January 2011 at 2:51pm
In our family (on my mother's side) we have 16 (soon to be 17) girls and one boy... I think the woman must have some influence over which sperm fertilise the egg - I don't believe it's as simple as male decides...
------------- mum to 3 lovely girls :D
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Posted By: jazzy
Date Posted: 16 January 2011 at 3:01pm
DH is 1 of 3 boys, he has 4 boys, his 2 brothers have 4 girls & 1 boy between them.
His mum has a m/c at 20weeks & it was a girl & I believe my m/c was a girl (cause I want to).
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Posted By: Lexidore
Date Posted: 16 January 2011 at 5:13pm
Raspberryjam wrote:
bowie wrote:
Isnt there something about boy sperm being slower and stronger and girl sperm being quicker so if you BD a few days before ovulation the boy sperm will be alive swimming onwards to get the egg but if you BD on the day of ovulation the girl sperm will beat the boy to the egg?
Or am i crazy? That sounds pretty crazy! |
Thats what I read too, I must have got the fast ones twice! |
Its actually the opposite Male sperm are faster but don't live as long, females are slower but live longer 
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