can twins have the same dna?
9561
It is true that identical twins share their DNA code with each other. This is because identical twins were formed from the exact same sperm and egg from their father and mother. (In contrast, fraternal twins are formed from two different sperm and two different eggs.)
936852
Blood type is entirely determined by DNA, so identical twins pretty much always have the same blood type. But because of the small changes in DNA that can happen in the womb, it's entirely possible for twins to have different blood types from each other.
278621
Yes, brother and sister can be identical twin or monozygotic twin but in very very rare case. Occasionally, in this rare case, an egg contain three sex chromosome (XXY). ... After monozygotic twins seperate in the womb, either one can have mutations and some cells can end up having slightly different DNA.
981590
Identical twins do not have identical fingerprints, even though their identical genes give them very similar patterns. ... Small differences in the womb environment conspire to give each twin different, but similar, fingerprints. In fact, each finger has a slightly different pattern, even for your own fingers.
252011
Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy. They share half of their genes, just like any other siblings.
168754
Of course, a lot of the gene pairs in your genome are actually the same, so it wouldn't matter which copy you used, but the odds of constructing an exact duplicate genome by chance are still vanishingly small. And even identical twins don't necessarily have identical DNA.
95065
Do Identical Twins Have the Same DNA? Although two fetuses develop simultaneously in superfetation, they differ in maturity, having been conceived days or even weeks apart. Superfetation is observed in animal reproduction, but it is exceedingly rare in humans. Only a few cases are documented in medical literature.
109006
The short answer. Yes. Blood type is entirely determined by DNA, so identical twins pretty much always have the same blood type. But because of the small changes in DNA that can happen in the womb, it's entirely possible for twins to have different blood types from each other.
893595
And since brothers and sisters can have different blood types, so too can fraternal twins. ... Identical twins come from the same egg and the same sperm and so share nearly identical DNA. For identical twins to have different blood types, something needs to happen to one twin's DNA.
1020622
Some identical twins can have different heights and weights. This is because height and weight are controlled by what you eat as well your DNA.
178846
Identical twins share the same set of genes, such as ones for thick eyelashes or a pointy nose – as well as the genes that boost risk for diseases. But sometimes rheumatoid arthritis, cancer, or another malady strikes one twin and not the other.
499796
Just because monozygotic twins have the same DNA doesn't mean they will look identical. Different hair color in monozygotic twins can happen in two ways. ... They both still have genes for hair color from both parents, the same DNA, but the could each express the color from the other parent.
840101
It is true that identical twins share their DNA code with each other. This is because identical twins were formed from the exact same sperm and egg from their father and mother. However, in the case of identical twins, early in development, this embryo divides into two. ...
142120
It is a basic tenet of human biology, taught in grade schools everywhere: Identical twins come from the same fertilized egg and, thus, share identical genetic profiles. But according to new research, though identical twins share very similar genes, identical they are not.
210979
Scientists have shown that identical twins have very similar marks when they are born. But, as they age, the marks in their DNA become more and more different. So even though identical twins have the same DNA, they are using it in different ways.
243675
Yes! Identical twins came from the same sperm and egg, so they have the same chromosomes and genes. But there are environmental differences that can affect the way they look and behave. ... As identical twins get older they may look more and more different, because they are exposed to more diverse environments.
310593
Identical twins can be genetically different, which could explain why they do not always share disorders such as schizophrenia or autism, according to a study published in March in PLoS One. Identical twins develop from one fertilized egg, and so start out with the same genetic information from each parent.