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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.

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11y ago

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Twins formed by the fertilization of two ova by two sperm are?

They would be fraternal twins. Identical twins are created when one sperm fertilized one egg, and hat egg then splits in two. Identical twins are always the same gender, while fraternal twins can be either gender, or a mix of the two.


What is the name for four twins?

four twins (assuming they are born at the same time) are called quadruplets. just like twins can be either one egg which splits, or two separately fertilized eggs, quadruplets are either two sets of identical twins, four separately fertilized eggs, or some combination therein adding up to four.


Do twins share the same placenta?

No, twins can either share the same placenta (monochorionic) or have separate placentas (dichorionic), depending on whether they are identical or fraternal twins.


Why are most conjoined twins female?

They can be either but are always Gender-Bound, Two boys or Two girls, a Boy and a Girl, born Siamese is impossible, as they are identical twins, not fraternal and normally ( Take their Gender) to a man- or woman as it were.


Are twins just two babies or a split embryo?

Twins can either be fraternal (resulting from two separate eggs fertilized by two different sperm) or identical (resulting from a single fertilized egg that splits into two embryos). So, while fraternal twins are two separate babies, identical twins come from a split embryo.


Why are identical twins always the same gender?

fraternal twins have two different chromosomes


What is the chance of you having twins if your boyfriend is a twin?

it has nothing to do with the father of the baby AT ALL! it depends on the Mommy's body. you have to either produce 2 eggs (which means fraternal twins) or have 1 egg that splits into 2 (which is identical)... all that depends on the father is whether or not he fertilizes both... though those genes can pass onto your children.


Why does identical twins not have the same weight and Skin colour?

Eye colour is caused by genetics whereas the weight of a person depends on how they life their life (how healthily they eat or how much exercise they do) so it is an environmental variation. Identical twins have the same genes so have the same eye colour.


What are maternal twins?

Actually, It's Fraternal and not faternal. They even have spell-check on this site to make sure you don't make a mistake and you made a mistake correcting the former idiot!............Idiot!!!!!!!!!


Do fraternal twins only run on mother's side?

Yes. Fraternal twins are due to two eggs being released. No - If they are on either side of the family, the incidence of twin pregnancy is increased, whether they run on the mum's side or the dad's side. And in addition to the above answer, fraternal (non-identical) twins are due to two different eggs being fertilised by two different sperm.


Why do fraternal twins have their own placenta?

Identical twins may or may not share the same placenta . Identical twins develop when a fertilized egg splits. Depending on when the split occurs will determine if the twins share a placenta, with either one or two chorions and amnions, or if they each develop their own placentas.


Why are baby bears born as twins?

Because the sow's reproductive tract is designed to enable her to have more than one fetus inside her, not as identical twins either. Black bear sows often don't just have twins, they can have triplets and quadruplets too!