Someone I know keeps trying to tell me that if there are a lot of boys in a family then you have boys and the same for girls! I keep telling her that doesn't matter, that it's 50/50 but she keeps telling me I'm wrong. Does anyone know of any articles to support me? Or am I wrong??? My dad has more brothers and had 4 girls and 1 boy, I have 4 sisters and ended up having 2 boys! What is she talking about???? ( I think it stems from the fact that she wanted a boy but had 2 girls and her husband has 1 brother and 3 sisters - so the "therory" would fit for her). If you know of any websites with some information please list (I've searched and searched but can't find any).
2006-12-12 01:34:04 · 7 answers · asked by Mum2Boys 4 in Pregnancy & Parenting ➔ Other - Pregnancy & Parenting
Are the amonut of X or Y sperm a man carries hereditary? If a lot of girls in family does he have more X sperms? Any websites to support?
2006-12-12 02:07:57 · update #1
I am amazed at the incorrect responses you have gotten so far. I didn't realize people were so un- or mis-informed.
The gender of a baby is determined by the sperm. The mom passes on a X chromosone. The dad passes on either a X or a Y. If he passes on the X..then it's a girl. If he passes on the Y then it is a boy. (girls are XX and boys are XY). There are no connections to heredity.
There are some factors that can determine which sperm fertilizes the egg. Sperm that contain the X (making a girl) is slower, but stronger (can withstand higher temperatures). Sperm that contain the Y are faster, but weaker (die in high temperatures). No one has mastered how to guarantee making a certain sex baby based on this (unless they go through expensive experimental ways). Here are several sources:
http://www.mtha.net/gender.html
http://pregnancyandbaby.com/pregnancy/baby/Boy-or-girl-The-mysteries-of-gender-selection-12.htm
http://www.homefocused.com/pregnancy/gender-selection.php
http://www.menstuff.org/issues/byissue/genderdetermination.html
2006-12-12 01:53:49 · answer #1 · answered by trevnme 4 · 2⤊ 0⤋
No, you are completely right! I don't know of any websites, but it's not true. My husband has all brothers, and his dad had all brothers.....we had a daughter! His other brother had a son! It all depends on the father's sperm and which chromosone it's carrying! You do have about a 1-2% higher chance of having a boy based on American birth statistics. Every year about 51.4% of the babies born in the US are male. Just let her think what she wants, she's dumb (sorry!).
2006-12-12 09:40:22 · answer #2 · answered by angie_laffin927 4 · 1⤊ 0⤋
I dont believe her one bit lol my dad has 1 sister and 1 brother and my mom has 3 sisters and 1 brother. My mom and dad made 3 girls and no boys.
My hubby has 2 brothers and 2 sisters and has 2 boys. I have two boys. and my sister has two boys. LOL so ummm i think its just a chance thing!!!! My hubbys only living sister has one girl.
2006-12-12 09:39:11 · answer #3 · answered by jess_n_flip 4 · 1⤊ 0⤋
Actually there are several factors in determining the sex of a baby.
Your friend is " partly right" We all know that the man determines the sex of the baby on the genetic side. So of there are more female children in the mans family he will "most likely" have female children, but you also have to look at factors like the time of the month that conception accrues and the condition of the mothers whom.
When it comes down to making a baby, I don't think any one has an absolute grantee on the sex, hair color or any thing.
2006-12-12 09:45:07 · answer #4 · answered by cajohnson667 3 · 0⤊ 2⤋
I don't know about a heredity factor, but my OB told me that after having a baby of one gender your chances of your next being the same go up. And they go up more and more with each same sex baby. I was told that my third had an 80% chance of being a boy (he was) because my first 2 were boys.
2006-12-12 11:02:48 · answer #5 · answered by tabithap 4 · 0⤊ 1⤋
YES in most cases the gender of baby do with heredity (the passing on of genetic factors such as the color of hair or eyes from one generation to the next, resulting in similarities between members of one family) unless otherwise but it has to follow the lines of either families. (mother side/ father side)
2006-12-12 09:45:34 · answer #6 · answered by ConRob 2 · 0⤊ 2⤋
whoevers genes are "stronger" put it this way my friend has 2 boys, her husband is the oldest of 3 BROTHERS but on her side she has sisters and thats it.... his genes were dominant.. so yes it has a lot to do with each side of the family but ultimately whoever has the STRONGEST genes
2006-12-12 09:36:49 · answer #7 · answered by HH72 2 · 0⤊ 3⤋