can fraternal twins have different blood groups?
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Like any two siblings, fraternal twins can have different blood types. Identical twins are trickier... Your blood type depends on the genes you happened to get from your parents. One way for them to end up with different blood types is if one twin gets a mutation in his ABO gene.
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.
213533
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. Fraternal twins can be of the same or different sexes.
184654
5﻿ Monozygotic (identical) twins will have the same blood type, with a few very rare exceptions. Dizygotic (fraternal) twins may have the same blood type, or they may have different types.
973685
Usually, the chances of fraternal twins being boys, girls, or a combination of both are the same as for any normal babies. Identical twins (Monozygotic), on the other hand, are always of the same gender. Fraternal twins can be two boys, two girls or one girl and one boy.
1083386
There are two types of twins – identical (monozygotic) and fraternal (dizygotic). ... This differs from fraternal twins, where two eggs (ova) are fertilised by two sperm and produce two genetically unique children, who are no more alike than individual siblings born at different times.
862325
In the case of fraternal (or binovular) twins, one may be Rh positive and erythroblastotic, while the other may be Rh negative and therefore escape the di- sease. When both are Rh positive, the two twins are apt to be equally severely affect- ed, even though fraternal and of different sexes.
468378
The most common type of twins are non-identical twins, which can be the same or different sexes. Non-identical twins are also known as fraternal twins or dizygotic twins (from two zygotes, what we call the earliest embryo when the egg and sperm fuse).
82864
There is a possibility that the siblings may have the same blood group. There is also another possibility that the siblings may have different blood groups. Everyone inherits two alleles of the gene, one from each parent. The combination of your two alleles determines your blood type.
52775
Identical twins have 100% of their DNA the same while fraternal twins share only 50%. ... Since both sets are the same they share 100% of their DNA. Fraternal twins are really just siblings who share the same womb. Each starts out as a separate egg fertilized by a separate sperm.
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Because fraternal twins are conceived by two separate eggs being fertilized by two different sperm, sometimes days or even weeks apart, it is possible for fraternal twins to be fathered by sperm from two different men.
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Having identical twins is not genetic. On the other hand, fraternal twins can run in families. ... However, for a given pregnancy, only the mother's genetics matter. Fraternal twins happen when two eggs are simultaneously fertilized instead of just one.
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Genetics can definitely play a role in having fraternal twins. ... However, for a given pregnancy, only the mother's genetics matter. Fraternal twins happen when two eggs are simultaneously fertilized instead of just one. A father's genes can't make a woman release two eggs.
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Can fraternal twins look so similar that they are mistaken for identical? Yes, it is possible for same-sex fraternal twins to look extremely similar. Like any siblings, fraternal twins are the products of two separately fertilized eggs from the same mother and father.
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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.
287134
Having identical twins is not genetic. On the other hand, fraternal twins can run in families. Genetics can definitely play a role in having fraternal twins. For example, a woman that has a sibling that is a fraternal twin is 2.5 times more likely to have twins than average!
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So yes, it is definitely possible for two siblings to get pretty different ancestry results from a DNA test. Even when they share the same parents. DNA isn't passed down from generation to generation in a single block. ... This has consequences in terms of how much DNA siblings share.