Fraternal (non-identical) do not share the same placenta as they are two babies formed from two eggs and two sperm. If they implant close together they may appear to be one placenta, but they are not. Identical twins formed from one egg and one sperm may split at any stage from the two cell right up to late in embryonic development which produces conjoined (Siamese) twins. The later in embryonic development the split occurs the more likely they are to share a placent.
do identical or non identical twins share the same placenta
Yes they do share the same 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.
Twins that share a single placenta.
Sometimes twins can share a placenta, and other times they can each have their own placenta.
It means that the twins share the same placenta but different anemic sacs.
The difference between Identical and Non-Identical twins is that Identical twins share the same placenta and are basically identical to one another. Non-Identical twins do not share the same placenta in the womb and two eggs fertilized at time of conception as opposed to one egg splitting in the case of Identical twins. I think that covers the basics. Hope this has clarified things for you.
Fraternal twins are really two siblings who happen to be born at the same time from the same mother. They each have their on placenta.
Fraternal twins (dizygotic twins) are simply two fertilized eggs that are implanted in the uterus at the same time. Identical twins (monozygotic twins) is one fertilized egg that separates into two embryos. In most cases, identical twins share one placenta, but have separate amniotic sacs. In some cases, they have two placentas. In rare cases, they share both the placenta and the amniotic sac.
no they do not.
Identical twins can go the whole way from separate placentae through to sharing organs,as in conjoined twins. It depends at what stage of the pregnancy the embryo splits in two. The earlier it occurs the more separate the placentae, cords etc.
They are dizygotic. Fraternal twins.
Fraternal twins can happen when two different eggs join two different sperms. Each baby then has its own cord and placenta. These twins may be of the same or opposite sex. Identical twins are produced when an egg and a sperm join together but then divide into two once they have joined. These twins may share a single placenta and very occasionally may also share the same amniotic sac. Dichorionic Diamniotic is the term for fraternal twins with two placentas and two amniotic sacs. Monochorionic Diamniotic is the term for identical twins with one placenta and two amniotic sacs. The fertilised egg splits between 4 and 8 days. Monochorionic Monoamniotic is the term for twins sharing one placenta and one amniotic sac. The egg splits between 8 and 12 days.
I am pretty sure because that is how my twins are at the moment that one placenta and two sacs mean identical twins more often than fraternal and more often identical if they are the same sex
no.I have been researching on twins and it has been proven on other websites like ask.com and yahoo answers.com that twins share the same features but not personalitys and interests!
Naturally never! Artificially maybe and possible.Naturally* Dizygotical (DZ) Twins (Fraternal or Non-Identical Twins): Born under the fertilization of two different eggs that when they grow in the uterus they don't share placenta.These can be:Male-Female DZ Twins (the most common grouping of twins)Female-Female DZ Twins (sometimes called sororal twins)Male-Male DZ Twins* Monozygotical Twins (Identical Twins) Born under the fertilization of one egg and forms on zygote and sperate to form two different embryos. They share the same placenta but not always share the same sac.They can only be of the same sex:Female-Femal MZ TwinsMale-Male MZ Twins (less commen grouping of twins)ArtificallyIt is possiblie that a woman during ovulation gives two eggs insted of one. One of the eggs maybe extracted and planted into an other woman. The both eggs will be artifically fertilized by the same semen. Making this can be possible but only be the identical eggs of one woman and the same seman of a man. In the end the second woman will give birth to one of the twins but that twin won't have her gens.
MZ twins are identical twins that share 100% of the same DNA. DZ twins share only 50% of their DNA (fraternal twins). MZ twins are always the same gender, whereas DZ twins can be the same gender or one male and one female. DZM would be the male pairing of DZ twins, DZF is the female pairing, and DZO is when there is a male and a female.
Brother or sister it doesn't matter they share an average of 50% of their DNA and identical twins DNA share 100%. Fraternal twins still share on average of 50% of their DNA.
Identicle twins share 100% of the same genes.
If they are related then they are twins?