Multiple Births

There are two primary types of twins, Identical and Fraternal.

Identical twins occur when the egg splits after fertilization. To date no indication of a genetic link has been found. Anyone has a chance, though small, of having identical twins.

Fraternal twins occur when more than one egg is dropped during ovulation. This trait can be inherited from the mother's side of the family. Studies have shown that the chances are also increased by being overweight or older.

Ferternal twins don't look alike, but twins do

DNA testing...though to me, it makes more sense to wait until they're born before worrying about whether they're identical or not.

Yes, the famous conjoined twins of the 19th Century, Chang and Eng Bunker, each had a wife.

The woman's body releases 2 eggs instead of one, and both get fertilized.

Fraternal twins are two siblings that have the same birth day, but do not look identical.

Twin are only those who are born at the same time, or almost the same time. Childern born 9 months apart aren't twins, they are siblings.

Jodha will be expecting twins and according to history.

Many people give money as a graduation gift. For triplets, that could get costly. It would be a great idea to get the triplets something that speaks to their individuality, or perhaps to their individual school or career choices that will follow graduation.

They didn't die; they're still alive and well in Germany.

No they are just very good friends and have known eachother a long time :P

Identical twins are born when a single fertilized egg splits and develops into two fetuses. Fraternal twins are born when two separate eggs are released and fertilized.

Identical twins take a long time to separate within the womb, and sometimes they don't separate entirely (conjoined twins). If doctors observe the two fetuses are connected at any point, that means identical twins.

You can also do a DNA test on the amniotic fluid surrounding the fetuses. If there are two sets of DNA present, it means fraternal twins. If there is only one unique set of DNA, it means identical twins.

Quads can be identical, fraternal, or a pair of identical twins. Identical quads are rare- that would require 1 egg divide into 2, and then divide again into two. Most quads are fraternal.

i was pregnant with a set of twins. one passed on at 13 weeks enutero and the other made it to 29 weeks before coming a bit early. the twin that passed had (i suppose you could say) mumification going on. when i found out the one twin had died, it was because i thought my water had broken so off to the hospitol to find out it was the passed on baby's fluids, and not her sister. (oh and my daughter born at 29 weeks, she will be 7 this year. best of luck, i hope that helped a bit, i know it's not all sciencey,but that is my story of faternal twin demise.

Quintuplets are 5 babies born on the same day to the same mother, born a matter of minutes or hours apart.

No.

Myomectomy alone wouldn't change the likelihood of conceiving twins.

The incidence of triplets has decreasing, not increasing, for more than ten years.

Monozygotic

monozygotic or maternal twins

To keep it simple and not get too technical, fraternal twins are from two eggs and two sperm that independently combine to produce a baby. Identical twins come from a single egg and sperm that divide to create two separate children. Gender is controlled by the males sperm and whether it contains the male genetic X chromosome. Since identical twins have the same sperm their genetic makeup is exactly the same (same egg and sperm used in development). Fraternal twins have two separate sperm and therefore it is possible one has the X chromosome and other does not.