can fraternal twins have different hair colors?
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Fraternal twins, on the other hand, are as alike as any two siblings. They may look very different. They can have different hair color, eye color, stature, and personalities.
120376
If your parent has two different copies of a gene, you have an equal chance of getting either one. And the same is true for each of your siblings. ... Imagine two parents that have one red and one not-red copy of the MC1R gene. They can have any hair color and probably have pale skin and freckles.
775725
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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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. But, actually, twins who start out with identical DNA always have slightly different DNA by the time they're born.
1425648
Fraternal twins can be either two girls, two boys, or one of each. These are the possible sex combinations: A set of boy/girl twins: Can only be fraternal (dizygotic), as boy/girl twins cannot be identical (monozygotic)
301032
Fraternal twins may be the same gender, they may have many of the same characteristics, but also may be very different from each other and, in fact, share half of their genes just like their sisters and brothers.
1250226
Yes definitely if they are fraternal twins and, although much less common, it is also even possible if they are identical twins. ... For identical twins to have different blood types, something needs to happen to one twin's DNA. Small changes in DNA can and do happen so identical twins do have a few differences.
1292101
But something close to this just might be. While twins of the nonidentical kind can't become conjoined, they can become something called chimeras. This is where fraternal twins fuse together very early on in development. The end result is not two separate, connected people but one person with a mix of both twins.
727342
Different alleles or gene variants code for differences in the melanin found within the skin. ... In such cases, fraternal twins can differ from each other quite dramatically in terms of skin color or other physical characteristics. Numerous sets of mixed twins have been born.
1065297
Fraternal twins may be of the same or different sexes. They share half of their genes just like any other siblings. In contrast, twins that result from the fertilization of a single egg that then splits in two are called monozygotic, or identical, twins.
71751
In a striking 18 percent of identical twins, products of the same egg with exactly the same genetic makeup, one twin is right-handed and the other left-handed. There also seems to be a higher proportion of fraternal twins with different handedness than is the case with other siblings.
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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.
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Having identical twins is not genetic. On the other hand, fraternal twins can run in families. ... For example, a woman that has a sibling that is a fraternal twin is 2.5 times more likely to have twins than average! However, for a given pregnancy, only the mother's genetics matter.
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We think of identical twins as having identical DNA. 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. ...
223923
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. So suppose a black man and a white woman have a daughter.
754919
Fraternal twins have a pretty similar environment in the womb and usually as they are growing up. Now imagine that two twins in a pair are different heights. Part of this may come from different environmental effects (like the diabetes example above).
522340
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. ... From her mother, she gets all genes for white skin.