Do children of Monozygotic twins have the same relatedness as siblings?

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Monozygotic twins, derived from a single fertilized egg, share nearly identical genetic material, including sex, DNA, and chromosomes. However, they do not have identical fingerprints, as these are influenced more by environmental factors in the womb than by genetics. This variability in fingerprints is comparable to that seen in dizygotic (fraternal) twins.In a scenario where two pairs of monozygotic twins (A1 and A2, B1 and B2) marry each other, their children will not be twins but will share a genetic similarity akin to that of siblings. Despite the parents having identical DNA, the children will not have the same genetic makeup as twins due to the random nature of genetic inheritance and potential mutations. If A1 and B1 have a child, that child will be genetically related to the child of A2 and B2 similarly to how siblings are related, not as identical twins.
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Hello, Chitose wonder chick again.

First to tell This is NOT a homework.

..........

Monozygotic twins are twin from same agg right? which mean Almost every of their indentical (Sex, DNA, Chromosome, bra bra bra...).

In some forum in my country their argue about does Monozygotic twins have the same fingerprint or not, so I ask you here.

1. Dose Monozygotic twins hava the same finger print?

............
2.

Miss A1 and A2 are Monozygotic twins.
Mr. B1 and B2 are Monozygotic twins as well.

If A1 marry B1 (or B2, same case)
and A2 marry B2 (or B1, same case)

What going to happan to their kids? almost like twin? (but not twin)
Are they going to have same DNA even they not twin?

If not, why?
Both pair of parent havs same DNA right?
because Mutation?

............

PS. English is not my native languge, forgive me if I'm wrong in gramma or spelling.
 
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1. No, they don't have identical finger prints.

This tells us that finger prints at birth are more dominantly determined by the local environment within the uterus, rather than by genetic instructions.

Since two fetuses sharing a womb will still experience somewhat different conditions, the variability in finger prints between monozygotic twins should be about the same as for heterozygotic twins.
 
Chitose said:
2.

Miss A1 and A2 are Monozygotic twins.
Mr. B1 and B2 are Monozygotic twins as well.

If A1 marry B1 (or B2, same case)
and A2 marry B2 (or B1, same case)

What going to happan to their kids? almost like twin? (but not twin)
Are they going to have same DNA even they not twin?

If not, why?
Both pair of parent havs same DNA right?
because Mutation?

Consider the case where A1 and B1 have a second kid. Since A1 has an identical genetic makeup to A2 and B1 has an identical genetic makeup to B2, this situation should be the same as A2 and B2 having a kid.
 
I mean both pair have only one kid.
what I wonder is son of A1 and B1 going to have same genetic instructer to son of A2 and B2? (same as twins, not same as brother)
 
Well, first you should consider the case where A1 and B1 have two kids. In this case, will the two kids be identical. Why or why not?
 
Oh I see... they just have identical as brother...
(aww man... why i didn't though about this case earlier.)
 
Correct. If A1 and B1 have a child, AB1, and A2 and B2 have a child, AB2, then AB1 and AB2 will have the same relatedness as siblings.
 

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