With identical twins, one egg (zygote) from the mother is fertilized by one sperm from the father, and then very early in development the embryo splits and two fetuses grow. Spontaneous division of the zygote into two embryos is not considered to be a hereditary trait, but rather a spontaneous or random event.
If the zygote splits very early (in the first 2 days after fertilization) they may develop separate placentas (chorion) and separate sacs (amnion). These are called dichorionic, diamniotic (or 'di/di') twins. While all fraternal twins are 'di/di', this occurs 20 - 30% of the time in identical twins.
Most of the time in identical twins the zygote will split after 2 days, resulting in a shared placenta, but two separate sacs. These are called monochorionic, diamniotic ('mono/di') twins.These twins are very similar genetically, and share a single afterbirth.
Very occasionally, twins will also share the same sac (fluid cavity). In about 1% of identical twins the splitting occurs late enough to result in both a shared placenta and a shared sac. These are called monochorionic, monoamniotic ('mono/mono') twins.
That depends on the type of twins. Fraternal twins usually have separate amniotic sacs. Identical twins usually share the amniotic sac.
yes they are created in the womb but no one not even identical twins have the same finger prints
Although Identical twins look the same and share the same DNA, there are some differences between the two do to there environment and way of life as they develop. However, one way to distinguish between the twins from birth would only be by their finger prints. In other words, identical twins finger prints are different from birth because of there movements within the mothers womb and what they are touching within her womb before they are born.
When a single embryo in a mother's womb splits into two separate embryos early on in embryonic development, identical twins are created. Because the two twin embryos originate from the same single embryo, they will have extremely similar, if not identical, physical appearances and emotional actions when they are born. Identical twins are "identical' because they are created from the same original embryo during development inside the womb, not due to who their parents are.
Where one cell splits into 2 or 3 durning the early age of pregnancy
The genes of identical twins are identical because the twins come from one egg that has split after fertilization. Fraternal twins are not identical since they come from two eggs but have occupied the mother's womb at the same time.
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.
Bear in mind that no two individuals are exactly the same. However, seeing that indentical twins result from the same fertilized egg with the same sperm, they are essentially clones of each other.
They are known as 'twins'. Identical twins are when 1 fertilised egg divides and each half develops separately in the womb, sharing the same genes. Non-identical twins are when two eggs are fertilised by two separate sperms.
Fraternal twins are created when 2 separate eggs are fertilized. Identical twins are created when 1 fertilized egg splits into 2. It is impossible for one identical twin to be male and the other female. Identical twins are usually the ones that look exactly alike.
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.
Fingerprints aren't determined by genetics, but by growth conditions in the womb. (some say it's the amniotic sac, some say it's the inside of the uterus) Either way, it's different enough even for twins for their fingerprints to end up personal, and not shared.