What are the chances (probability) that I will have a daughter after 3 sons?
477743
Why all these people are saying its 50/50 I have no idea.  It certainly is NOT 50/50, the chance varies for every individual.  Some males have more sperm with the X chromosome and some have more sperm with the Y chromosome.  Very few, if any, males have an exact 50/50 ratio.
488747
Well, I have this friend that had 4 kids and lost custody cause she was a crack head & also had 50lbs too much crack, anyway she might be a good choice and she would split and leave u the kid. I would have to say there would be no gaurantee on what the babies health would be though. But thats the chance you take , along with the mixture of your DNA ! She is a nice Religious girl , just a little ate up and out there ( Somewhere, Just don't know where). Oh by the way , watch those blond jokes u leave ladies cause u look like a natural platinum blond now !
249369
Is the term you are looking for "probability"?\n\nI hope this helps.
881626
Construct a punnet square:\n\nMom=  I^A & i\nDad= I^B & i\nOffspring will have a 1/4 chance of being: I^AI^B, I^Bi, I^Ai, ii\n\nIf the mother is I^Ai and the father is I^Bi, the possible blood phenotypes in the offspring are AB, B, A, and O.  There is a 25% chance of each blood type.
727752
Number of all permutations = 8!\n\nNumber of all permutations with 5 boys first (then 3 girls) = 5!3!\nNumber of all permutations with 5 boys last (3 girls first ) = 5!3!\n\nSo the probability in question is 2*5!3!/8! = 1/28
744327
If the probability of haveng either a boy or a girl is equal, then the ration of boys to girls will be 1:1
807540
First thing you want to check is to see if the trait skips a generation or not.\n\nIf it does then chances are that it's a recessive trait.  If it doesn't then chances are that it's a dominant trait.  \n\nI want to stress the word "chances are" because it's possible that a trait NOT skip a generation yet still be a recessive trait.  Blood O type, for example, is recessive whereas A and B are dominant.  If both parents are blood type O, the child will be blood type O as well.  \n\nNext thing you want to check out is count the number of traits in the males compared to females.  \nIf it's about a 50:50 ratio, then it's an autosomal trait.  \nIf it's mostly males and virtually no females, then it's an X-linked recessive.  \nIf it's about 1/3 male and about 2/3 females, then it's X-linked dominant (doesn't happen very much but still possible)\n\nGood luck!  Hope this helps!
943595
The statements \n "At least one of the woman’s children is a boy, and the man’s older child is a boy"    are equivalent from the statistical\nperspective. The probability of the other child being a boy in each\ncase is 50%.
441562
Statistics\n\n* Down syndrome occurs in roughly 1 of every 750 births in the United States.\n* The risk of having a child with Down syndrome is less than 1 in 2,500 among young women.\n* This risk increases to roughly 1 in 350 when women reach 35 years of age.\n* After age 45, the risk of having a child with Down Syndrome is about 1 in 25.
1115185
25% chance of being O\n75% chance of being A\nonly if both parents are heterozygous\n\neven if one is homozygous no chance of getting "O"
909716
Mother's genotype is X*X and dad's genotype is XY.\nX*X -------> 1/2 X* & 1/2 X\nXY --------> 1/2 X & 1/2 Y\n\nKids genotype will be: 1/4X*X, 1/4XX, 1/4X*Y, 1/4XY\nTherefore, there is a 25% chance of having a daughter who is a carrier, 25% chance of having a daughter who is not a carrier, 25% chance of having a hemophilic son and 25% chance of having a healthy son.
759196
On your side, the probability to have brown hair is one. Your fiancee have 0.75 chance of both parent had brown hair, I guessed.\nSo your baby will have >.75 probability to have brown hair.
806831
All your responders so far have assumed that the next child's gender is independent of the prior children's genders. That is a correct assumption.\n\nThey have also assumed that the probability of having a boy is 50%. This is not quite true. Population-wide, the ratio of baby boys to baby girls is approximately 105 to 100, so the percentage is actually a bit over 51%. \n\nThis is also based on the assumption that the probabilities do not vary from one couple to another. You may have read descriptions of techniques for increasing the probability of having a girl, or of having a boy. And if so, you know that the things you have to do (I won't get too graphic here) are things that some couples are likely to be doing already (because of the geometry of their bodies, or the chemistry of their bodies, or because of their technique). So I suspect (and this is only my opinion) that the probability of having a child of one gender or the other varies from couple to couple.\n\nThat last-mentioned suspicion could probably be tested by determining the relative frequency of families with different combinations of boys and girls. Do siblings of the same sex tend to occur more frequently than if each birth were a 51/49 proposition? If so, then there is likely a variation from couple to couple. And if they occur LESS frequently, then we REALLY have a conundrum, and I have NO idea what it would mean.
230598
theres all kinds of things said about this and i must disagree with anyone who says it cant happen or u cant carry it because my 7 year old son is proof of that. i had my tubes tied and 3 years later my son was born. it is a slim chance like 15 percent but it does happen.
131088
try this site\n\nhttp://www.futureaccountant.com/probability/
219821
This cannot be ascertained without knowing how many are being selected in all...\n\n\nhttp://www.futureaccountant.com/probability/\nhttp://www.schoolingkids.com/
900949
I have a 10 yr old step daughter\n5 yr old daughter\n3 yr old daughter\nand a BOY due in January!