would a brother and sister have the same blood type?
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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.
136601
Identical twins do not run in families; rather, they are random. Without DNA testing, there is no way to know if your great grand uncles or aunts were identical or not. However, twins who share close similarities are more likely to be identical rather than fraternal.
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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.
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The siblings with the most in common are usually identical twins. Other siblings may have interests in common and develop a close relationship, but the relationships of identical twins will almost always be closer than relationships between other siblings due to the similarity in their genetic makeup.
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Genes do matter as siblings are more likely to share the same IQ as compared to unrelated children being raised together. And there are more examples like this.
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They May Not Look and Act Alike 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.
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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. Therefore, it may be concluded that twins with differing blood types are dizygotic, or fraternal.
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Twins identified as marrow matches for the same patient. ... Due to the way matching factors (called human leukocyte antigens or HLA) are inherited from their parents, there's a 25% chance that any two siblings will be born with the same factors and could be matched with the same patient.
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Fraternal twins really aren't any different than two siblings (except they happened to share the same womb at the same time). Each of these twins is the result of a separate egg being fertilized by a separate sperm. ... And since brothers and sisters can have different blood types, so too can fraternal twins.
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At first it might seem like kids from the same parents should look alike. ... But brothers and sisters don't look exactly alike because everyone (including parents) actually has two copies of most of their genes. And these copies can be different. Parents pass one of their two copies of each of their genes to their kids.
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Blood Inheritance Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
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Full siblings have the same mom and the same dad. So these siblings are getting all of their genetic information from the same two people. Half siblings only share DNA from one parent. The genetic information from the other parent is different.
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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. ... However, twins with the same blood type can be either fraternal or identical.
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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.
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Siblings are usually more alike because the detail of the activity of the cells is like the closest source, the same parents, but this is often not the case. ... My siblings and I had similar voices, but I think that my parents resembled each other a lot (even though they were born in different places).
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Because of recombination, siblings only share about 50 percent of the same DNA, on average, Dennis says. So while biological siblings have the same family tree, their genetic code might be different in at least one of the areas looked at in a given test. That's true even for fraternal twins.
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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.