nightangel73
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Sex of the Baby And Genetics
Posted: 06-26-07 21:57pm
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Question ladies..
I am not pregnant yet but when I was
talking with my soon to be mother in law
she was saying me that if i wanted to have
2 children they will be for sure boys
because in my fiancee's family only one
female (which is my fiance's sister) has
been born in 100 years. So I guess my
question is how true could this be? Are
really the chances slim to have a baby
girl with a genetic history like this? Are
there any tricks to have baby girls?? lol
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LittleCaseysMommyJen
Experienced User , Rather EHEALTHy
Joined: 11 Jun 2007
Posts: 187
Location: Back in Texas.
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Posted: 06-26-07 22:31pm
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Ummmmmmm I'm not sure.
I do know that rh blood types can only
have one sex baby.
Like my sister is rh- i think it is. . .
sorry my brain is lost right now but she
has had 3 girls and misscarried on her
baby boy.
The same with her dad he has only had a
girl (my sister)
Her granmother and uncles also have all
had either boys and lost their girls or
girls and lost their boys.
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sWeEtPeEwEe
Experienced User , Rather EHEALTHy
Joined: 21 Jun 2007
Posts: 169
Location: ,
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Posted: 06-26-07 23:11pm
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The sex of the baby is determined from the
father... because the chromosones of a
female is xx and the chromosomes of a male
is xy so they get split up when eggs and
sperm are made. so no matter what the
females egg is going to be an x. However
the male has an even amount of x sperms
and y sperms so it just depends on which
one makes it to the egg first. I also
heard that the smartest sperm of the bunch
is the one that reaches the egg.
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Jolie_3110
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Joined: 04 Dec 2005
Posts: 1755
Location: Essex, England
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Posted: 06-27-07 03:40am
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This happened with my fiance's family they
have all boys, as far back as you go they
are all boys!!! but they also all only
seem to have had two children. My fiance's
dad had his third child last year and it
was a girl!!!!!! Everyone was amazed!
This is my third child, but its only my
fiance's second but we are hoping we can
follow the trend and bring on some girls!!
lol!
LittleCaseysMommyJen - My sister is rh
negative, she had a miscarriage with her
first baby then went on to have 2 boys
safely does this mean that her first child
was more likely to have been a girl then??
I didnt know they were only likely to have
one sex, I thought it was more down to the
babies blood type
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LittleCaseysMommyJen
Experienced User , Rather EHEALTHy
Joined: 11 Jun 2007
Posts: 187
Location: Back in Texas.
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Posted: 06-27-07 04:05am
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How i look at it I would believe it was a
girl. I am not a scientist and I don't
think it's been fully proved yet, but my
sister disscussed it with her Obgyn and
her doc. told her that studies were being
done.
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vanessalouanne
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Posted: 06-27-07 05:19am
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same thing with my husband...his whole
family is males.. they have 2 female
cousins and about 30 boys and we are
having.................... a girl.
everyone was shocked and thought for sure
it would be a boy but.. weve had 5 4d
ultrasounds and are pretty positive its a
girl.
i think it can really go either way.
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Dannzibelle
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Posted: 06-27-07 05:21am
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There are more boys in both mine and
.Dom's family but we're having a little
girl, all my cousins are boys my dad only
has brothers and .Dom has a brother and
only one girl cousin and only one aunt
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Lauren_Jay15
Experienced User , Rather EHEALTHy
Joined: 16 Mar 2007
Posts: 483
Location: ,
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Posted: 06-27-07 05:31am
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I'm not sure but I know it can be true
that first borns have a certain gender,
like in my family, all of my nan's 8
children, that have had children, apart
from her first daughter had a girl first.
My mum had me, my nan had her first girl
so I was expecting Paige to be a girl
really. Unless its just the blokes we go
for. lol. I wouldn't worry too much. You
never know what might happen.
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tinkinpink84
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Posted: 06-27-07 07:29am
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| LittleCaseysMommyJen
wrote: | Ummmmmmm I'm not sure.
I do know that rh blood types can only
have one sex baby.
Like my sister is rh- i think it is. . .
sorry my brain is lost right now but she
has had 3 girls and misscarried on her
baby boy.
The same with her dad he has only had a
girl (my sister)
Her granmother and uncles also have all
had either boys and lost their girls or
girls and lost their
boys. |
i dont think thats quite true, my sister
is rh- she had a daughter, aborted one due
to circumstances then got pregnant again
and had a baby boy. so the rh- i dont
think that one holds up
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tinkinpink84
Supporter
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Location: , Germany
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Posted: 06-27-07 07:32am
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my family is weird, my grandpa had 6
brothers, no girls my grandma had 3 boys
and 1 girl, my mom had 2 girls 1 boy in
that order. my uncle has aboy and a girl
in that order, my sister has a girl and
boy in that order then i have a boy and a
girl in that order. SO hmm i dunno how
genetics would work, but so far my familys
pretty evened out with the boy girl thing
maybe we just got lucky, i think it all
has to do with sex positions and such
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mommyto3soontobe4boys
Experienced User , Rather EHEALTHy
Joined: 10 Feb 2007
Posts: 185
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Posted: 06-27-07 07:37am
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My friend has a rh blood type and has a
boy (2) and a little girl (4months)
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KatieFlower
Experienced User , Rather EHEALTHy
Joined: 15 Feb 2006
Posts: 407
Location: Massachusetts, U>S>A
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Posted: 06-27-07 18:03pm
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I am rh- and I have never heard of that.
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nightangel73
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Posted: 06-27-07 18:20pm
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i did some google searching and found
several places that talks about techniques
to increase the chances for having a girl
or a boy. Seems interesting. They talk
about the ph and how X sperm survive
better at higher ph than y sperms and so
on. I think I'm going to do more research
on that one.
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arcadia
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Posted: 06-27-07 21:36pm
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i'm rh- and i have a healthy 3 month old
son.. & .in my family, it's girls,
girls, girls.. hardly any boys. but i had
a boy. it's really just the luck of the
draw..
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Mints_MeatPie
New User, Becoming EHEALTHy
Joined: 08 Dec 2005
Posts: 27
Location: Here
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Posted: 06-29-07 06:52am
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| LittleCaseysMommyJen
wrote: | Ummmmmmm I'm not sure.
I do know that rh blood types can only
have one sex baby.
Like my sister is rh- i think it is. . .
sorry my brain is lost right now but she
has had 3 girls and misscarried on her
baby boy.
The same with her dad he has only had a
girl (my sister)
Her granmother and uncles also have all
had either boys and lost their girls or
girls and lost their
boys. |
RH Factor doesn't work like that.
If the mother is RH- and the dad is RH+,
it can make a baby with RH+ blood. In the
off chance that the baby's blood crossing
into the mother's bloodstream, the
mother's body will create antibodies to
fight the RH+ in the baby's blood. This
causes anemia and other hemolytic (blood
destroying) issues. So, before the
mother's body is "sensitized" (when it
gets a taste of the 'badguy'), they give
her shots to inhibit the production of
those antibodies.
Basically, it's got nothing to do with
gender.
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kaerbear
Most Diplomatic Poster
Joined: 10 Apr 2007
Posts: 1557
Location: ,
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Posted: 06-29-07 07:04am
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uh, i studied a little bit about genetics
in my university classes and i don't
remember them ever mentioning sex
positions being a factor lol. i think
these things are random for a reason. we
can't start manufacturing our babies to
suit ourselves. if you have heard
something about increasing your p.H that's
one thing, but you're talking about
millions of microscopic sperm cells that
each have a unique genetic code. nature
designed it that way because it's the way
that works best. why not just be amazed
at the randomness of it all and be just as
happy whether it's a boy or a girl?
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michelle1981
Supporter
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Location: Toronto, Canada
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Posted: 06-29-07 07:42am
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| tinkinpink84
wrote: | | LittleCaseysMommyJen
wrote: | Ummmmmmm I'm not sure.
I do know that rh blood types can only
have one sex baby.
Like my sister is rh- i think it is. . .
sorry my brain is lost right now but she
has had 3 girls and misscarried on her
baby boy.
The same with her dad he has only had a
girl (my sister)
Her granmother and uncles also have all
had either boys and lost their girls or
girls and lost their
boys. |
i dont think thats quite true, my sister
is rh- she had a daughter, aborted one due
to circumstances then got pregnant again
and had a baby boy. so the rh- i dont
think that one holds
up |
i agree!
I have rh- and i have 2 boys and a girl.
My husbands family favour boys. They do
determine the gender, and i was so
surprised that we got a girl. We had 2
boys, his brother had 1 boy, his father
had 3 boys and his father's father has 11
boys 2 girls. I think #7 or 8 was the
first girl 
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Jolie_3110
Extremely EHEALTHy
Joined: 04 Dec 2005
Posts: 1755
Location: Essex, England
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Posted: 06-29-07 07:53am
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| kaerbear
wrote: | | uh, i studied a little bit
about genetics in my university classes
and i don't remember them ever mentioning
sex positions being a factor lol. i think
these things are random for a reason. we
can't start manufacturing our babies to
suit ourselves. if you have heard
something about increasing your p.H that's
one thing, but you're talking about
millions of microscopic sperm cells that
each have a unique genetic code. nature
designed it that way because it's the way
that works best. why not just be amazed
at the randomness of it all and be just as
happy whether it's a boy or a
girl? |
I remember reading somewhere that (x)
female sperm were stronger than (y) male
sperm. But the males were smaller and
quicker. So the position thing would work
if the sperm was ejaculated near the
opening of the cervix the female sperm
would be better of because they were the
stronger ones and were more able to make
the longer journey. Where as, if sperm was
ejaculated at the top of the cervix the
boys would fare better because they were
quicker!! It works for ph too. one sort (I
cant remember which!) Can kill of sperm
meaning that the stronger females will
have a better chance, the other ph helps
the sperm so boys would do better. It
works for lots of situations, such as
timing intercourse around ovulation.
I looked up on it quite abit and the was
quite alot of evidence to back it.
Although for me it ttc was hard enough as
it was without having to think about this
lot too!! I have 2 boys and am quite
likely pregnant with the third!! But who
cares what the sex is, just be happy with
what you have got!
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