how can identical twins be genetically different?
273247
Identical Twins Are Genetically Different, Research Suggests. SAN FRANCISCO – Identical twins may not be so identical after all. Even though identical twins supposedly share all of their DNA, they acquire hundreds of genetic changes early in development that could set them on different paths, according to new research.
1312068
After all, identical twins have the same genes, share the same womb and usually experience the same childhoods. ... By comparing identical and fraternal twins and their sensitivities to illnesses, it is possible to separate the genetic roots of conditions from their environmental influences.
100263
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. ... Usually, the egg and sperm come together and create an embryo, which eventually grows into a human baby.
263513
​Identical Twins Identical twins are also known as monozygotic twins. They result from the fertilization of a single egg that splits in two. Identical twins share all of their genes and are always of the same sex.
515948
What makes identical twins different? Developing due to the split of one single fertilized egg, monozygotic twins start development as genetically identical and differences are often attributed to the effects of the environment, differences in life experiences and exposure to risk factors.
455535
Identical twins are always the same sex; they usually are the same height, weight and have similar hair color. In relation to the genetic differences in MZ twins, different genes can be turned on or off which is why one identical twin may have a condition or disease that the other doesn't.
724477
Things like your eye and hair color are controlled by your DNA. This is why identical twins look so much alike -- they share the same DNA. And yet, they aren't exactly alike. ... Identical twins have physical differences because when it comes to the way you look, both nature and nurture matter.
1316149
Although identical twins do share the same DNA. In that respect, they are the same person.
457274
It's possible, but unlikely for the skin colors of twins to be very different. Identical twins have to have the same skin color, because they have the exact same genes, they started out as one embryo that split into two. Fraternal twins start as two seperate embryos, and are as similar as any other siblings.
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.
1423928
Identical twins came from the same sperm and egg, so they have the same chromosomes and genes. ... So identical twins with identical DNA may have different genes turned on, causing them to look and act differently, and even to develop different diseases such as cancer.
1305449
They're called identical twins because their genomes are identical. But even though all of their DNA is the same, they clearly are not. ... DNA and RNA sequencing technologies have advanced to the point where allele-specific expression can now be quantified.
135758
Despite having the same genetic makeup, identical twins have their own distinctive personalities. Just how their individuality emerges has remained a bit of a mystery. ... Importantly, identical twins raised in the same household — the same "outer" environment — still develop personality differences over time.
1429725
Identical twins do indeed start with identical DNA—they are the result of the same sperm from dad and the same egg from mom. The original fertilized egg divides one or more times before the resulting clump of cells splits into two. Each clump of cells goes on to become one of the identical twins.
103348
Despite having the same genetic makeup, identical twins have their own distinctive personalities. Just how their individuality emerges has remained a bit of a mystery. ... Genetics play a huge role, but so does the environment, which can influence the way our genes are expressed.
553508
Identical twins do indeed start with identical DNA—they are the result of the same sperm from dad and the same egg from mom. ... DNA differences or mutations can happen any time a cell divides. This is because a cell needs to copy its DNA before it can divide.
570278
Non-identical, or dizygotic, twins occur when two separate eggs are fertilised, each by a different sperm, and develop in the womb at the same time. These twins can be the same or different sexes and are no more alike than any brother or sister, despite being born together.