can identical twins be different colors?
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They are identical or monozygotic twins, meaning they developed from the same zygote, which split and formed two embryos. ... 'However, an exception might be when a change in one of these genes that control skin colour happens after the twins separate in very early development - so called somatic mutation,' she said.
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Same-sex twins with separate placentas can be fraternal or identical. For health reasons, it's good to know whether your twins are fraternal or identical. To find out whether twins are identical or fraternal, you can ask for a genetic test after your babies are born.
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Identical twins will have the same eye color. There are a few genes involved in eye color, and their genes are identical. It is possible for environmental factors after birth (epigenomics) to cause differences in the expression of genes, and therefore giving each twin a different phenotype (or trait).
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No, since identical twins only split up after the genetic traits are decided. Physically, they are identical in every way. The only way they could have a different hair colour would be for them to dye their hair. Physically, they are identical in every way.
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Indeed, it is extremely rare to find genetically identical twins, who differ in body weight (demonstarting just how highly heritable body weight actually is). Thus, body weight in identical twins is remarkably homogeneous not only because of the heritability of weight per se but also due to heritability of weight gain.
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The bottom line But, like those who aren't twins, identical twins all have unique fingerprints. Due to environmental factors that affect their development inside the womb, it's impossible for identical twins to have the exact same fingerprints.
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While obviously not everyone has an identical twin, according to experts, it could be true that everyone has a twin that at least looks just like them. We've all seen someone we have mistaken for someone else, and many of us have even been mistaken for another person.
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The chances of having identical twins is relatively rare — around 3 or 4 in every 1,000 births. And while it may be obvious, identical twins are always the same sex, either both boys or both girls, at birth. Why? Well, they don't just look alike — they also share the exact same DNA.
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Identical twins share the same DNA and have, in principal, the same set of genes. But they already start to differ while in the womb. When they are born, they are no longer identical - they do not, for example, have the same fingerprints.
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Although identical twins have the same genes, they don't always look the same. This is because children's health and development are shaped not only by genes but also by experiences in the womb and after birth. For example, a twin who receives less blood from a shared placenta might weigh less at birth.
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At first blush it might seem impossible they could look so different. After all, while huge differences can and do happen with fraternal twins, identical twins are usually exactly that -- identical in skin, hair and eye color.
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Can identical twins have different eye color? Why or why not? - Quora. Identical twins will have the same eye color. There are a few genes involved in eye color, and their genes are identical.
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Despite having the same genetic makeup, identical twins have their own distinctive personalities. ... Importantly, identical twins raised in the same household — the same "outer" environment — still develop personality differences over time.
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Twins can be different in appearance, having different skin colors, if they came from different eggs. When two eggs are fertilized by two different sperms, the babies will be fraternal twins and have different appearances, this is because they will have different DNA makeup and chromosomes.
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Are identical twins 100% genetically identical? 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.)
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The Claim: Identical Twins Have Identical DNA. 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.
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They come from the same fertilized egg and share the same genetic blueprint. To a standard DNA test, they are indistinguishable. But any forensics expert will tell you that there is at least one surefire way to tell them apart: identical twins do not have matching fingerprints.