Multiple Births

Most people will answer this by explaining that the twins will run the same risk are normal adults.

However, if the twins are monozygotic they may also be "mirror-twins", in which one twin would have an increased chance of displaying situs inversus, a condition where the organs are flipped (mirrored to other twin).

This in and of itself isn't harmful, but the origins of situs inversus are believed to be in the earliest stages of development, arising from cilia that move clockwise instead of counter-clockwise, thus moving the cells that will form organs to the wrong side.

Going back to questions of infertility, it is known that this wrong-turning cilia cannot play a normal roll in some biologic functions, including driving the bending movement required for sperm (cilia structures of the tail) to be motile. In this way, male infertility (sterility) could theoretically be affecting at a higher incidence in man mirror twins with situs inversus.

Yes. Identical twins started out as one egg and one sperm cell and are genetically identical. Fraternal twins come from two eggs and two sperm cells and are no more closely related than any other sibling.

Not really. Unipolarity is a term that describes an international system in which one power (or state) is much more powerful than any other power, or potential group of powers. Globalization describes the nature of the interaction or communication between states, organizations, people, firms, and other actors within an international system.

Only if twins run in your family. I am guessing the chances would be 1 in 100. Or if you take utility drugs you are bound to have twins.

If one egg is fertilized and as it begins to grow it divides into two separate zygotes (fetuses) then they can develop into identical twins. If two separate eggs are both fertilited at the same time they will develop into fraternal twins

There are two types of twin, monozygotic (identical) or dizygotic (fraternal, non-identical) and each type is created in a different way explained below:

1) Monozygotic Twins. These type of twins both com from the same fertilized (zygote) and so have exactly the same genetic make up and will look exaclty like one another. Once the zygote has developed up to a certain point it splits into two, separate zygotes. This is often because the mother has received a mild bump, not enough to be fatal, to the stomach. These two new zygotes will go on to grow and develope as normal although they may well be stunted in size because of the lack of space to grow and because they share the same placenta and to have to compete for nutrition.

2)Dizygotic Twins. These type of twins com from two separate eggs and so are only as similar as any two brother/sister compination. This type of twin occurs when both of the mothers overied are active at the same time and both produce and ovum. The fathers sperm is easily enough to fertalize the two eggs both of which will then implant into the uterus and develope into babies. These type of twins, unlike the ones above, each have their own placentas so the only reason for them to be stunted in size is the lak of space.

Right now there is a little over 6000 sets of triplets in the U.S. 1 in every 1,000 triplet births are identical.

This is a reference to a TV series on in the early 1990s that was directed by David Lynch called "Twin Peaks." A "Twin Peaks experience" is an experience that is either very surreal in its own right, or one that is surreal because it involves people who are eccentric. - That answer kind of sucks. - No it doesn't, you suck.

If two (or more) eggs are fertilised and develop together you will get fraternal twins. Identical twins are the result of a single fertilised egg dividing into two embryos.

twins are passed down through the mother's genes.

I believe now she is having twins....I saw this info on the front cover of a magazine in a store...It read something along these lines "The fertility doctor gives her the good news and then in big print it said She's having twins.So that's awesome to hear,glad she's finally got something she's been wanting for a long time.Congrats to Jen!

i am 8 years old i am nnot aloued to answer this

This is actually such a coincidence! I'm matt cunningham and i gave birth to two beautiful baby boys on the 29th of February! It's some crazy stuff!

Women who are themselves fraternal twins have a 10% chance of producing twins, identical twin women have only a 0.6% probability of having a twin birth.

Twins normally skip a generation... but there is no telling until you get a sonogram.

if you DO only have one child at this time, that child has the twin gene, and could have twins.

its the women who determs if you are having twins

you could but it normally skips a generation

doubtful

Yes, only fraternal twinning (caused by releasing more than one egg) has a genetic connection, and that connection only holds on the mother's side. So, many twins are born with no family history of twins at all.

Most likely not, as it shows to skip a generation. It skipped your grandma, so by logic, the pattern is yes-no-yes-no. You would the the fourth no.

It will also depend on which side of the family the twins were on. The propensity to have fraternal twins can be inherited as a female trait that causes more than one egg to be dropped at a time.

Identical twins have no genetic relationship that has been found to date.

no

JC is pregnant. Bianca mentioned it on the news Tuesday, Oct 11, 2011 on the Eye Opener at 5:30 am.

Mirror Twins are always monozygote twins.

This does not mean that fraternal twins won't be a righty and a lefty - if your family tends to run left handed.

Identical twins come from one egg and one sperm. Fraternal twins come from two eggs and two sperm.

You have the same chance as the general population. Identical twins are a genetic accident, researchers still don't know what triggers an egg to split making two embryos from one fertilized egg.

Yes