whats the probability of a lady having twins? wat about siamese twins?

Question

please tell meeeeee

Answer 1

Siamese or better known as co-joined twins are rare enough, the developing embryo begins to split into identical twins but then stops part way leaving the partially separated egg to mature into a conjoined fetus.

They are more often female than male (ratio of 3:1)

They occur as often as once in every 40,000 births but only once in every 200,000 live births.

Are more likely to occur in Africa or India than in China or the United States.

May be caused by genetic and environmental conditions which are responsible for the failure of twins to separate after the 13th day after fertilization.

1/50,000 to 1/100,000 are conjoined twins.

70% are female - even though monozygotic twins are more frequently male than female.

40% are still born

75% are still born or die within 24 hours.

Answer 2

Identical twins are a chance happening (because it is one egg splitting into two). They happen at the same rate all over the world and there is no way to increase or decrease your chance of having them. Fraternal twins can be genetic, but it is the woman's genes that determine whether or not she will have twins (because it is two seperate eggs being fertilized). Siamese twins are a birth defect, and I'm not sure of the likelyhood of that happening.

Answer 3

If the woman has twins in her family, the probability goes up. Twins run in the female family, passed through the females!!

Siamese twins are like a .05% chance!!

BUT if she's taking fertility treatments, the chance of her having a mulitple birth goes up like 50%.

Answer 4

On Siamese twins - MSNBC had a story on the conjoined twins that were separated today and they said that one in every 50,000 - 100,000 birth are conjoined twins. But that many don't survive to even be operated on to separate.

Answer 5

Twins occur once in every 100 births with fraternal twins more common than identical ones.

Conjoined or Siamese occur once in either every 40,000 to 70,000 births or once in 200,000...differing stats on internet.

Conjoined births more common in Asia.

Answer 6

1 in 100 births is the stats on twins...siamese is so rare I am not sure...

Answer 7

depends on family history, twins tend to run in the family. if her grandma had twins then she is a little more likely to have twins. my best friend in high school is a twin, and she has twin aunts.