 |
By (user no longer on site) OP
over a year ago
|
Ok. A question that was posed by my son this morning.
If you have female identical twins and they both have a child with male identical twins, how close genetically will the resulting children be?
Also if you have identical femal twins and they both have a child with the same man, how close genetically will the children be?
And lastly, if male identical twins both have a child with the same woman.....you get the picture!
Quite a question over your porridge! |
Reply privately, Reply in forum +quote
or View forums list | |
There will certainly be a similarity between the children.
However, the children won't be "the same". As, each parent has two sets of genes, and gives half of them to the children.
With Gene Crossover & Recombination, there are essentially infinite combinations of genes that could be passed on to the children.
Anyway, comparing the cousins, they would closely resemble brothers and sisters. Obviously between brothers and sisters within a "normal" family, there are some similarities, and some differences.
With a DNA test, the cousins would likely be indistinguishable from siblings. Paternity tests would also be inconclusive. |
Reply privately, Reply in forum +quote
or View forums list | |
|
By (user no longer on site)
over a year ago
|
This is really simple.
A child is made from the combination of 50% of the parents DNA.
DNA is made up of millions of 'pairs' with one of the pair being from Father and the other from Monther.
As each sperm and egg is made up from a list of millions of one of the pairs each is unique. To emphasise the probability that any one sperm or egg is the same as another is minute to the level that its ignorable.
Thus as each component of the new baby is so unique the combination is also going to be unique (within billions to 1 probability). |
Reply privately, Reply in forum +quote
or View forums list | |
|
By (user no longer on site)
over a year ago
|
"There will certainly be a similarity between the children.
However, the children won't be "the same". As, each parent has two sets of genes, and gives half of them to the children.
With Gene Crossover & Recombination, there are essentially infinite combinations of genes that could be passed on to the children.
Anyway, comparing the cousins, they would closely resemble brothers and sisters. Obviously between brothers and sisters within a "normal" family, there are some similarities, and some differences.
With a DNA test, the cousins would likely be indistinguishable from siblings. Paternity tests would also be inconclusive."
I can agree with this statement ONLY based on first level DNA tests.
These compare only about 220 genes.
A fully sequenced DNA would prove lineage but be unique. |
Reply privately, Reply in forum +quote
or View forums list | |
|
By (user no longer on site)
over a year ago
|
Something along these lines has actually happened. Female identical twins have married identical male twins separately I hasten to add!
The resulting offspring - identical twins, have then been born |
Reply privately, Reply in forum +quote
or View forums list | |
|
By (user no longer on site)
over a year ago
|
"Ok. A question that was posed by my son this morning.
If you have female identical twins and they both have a child with male identical twins, how close genetically will the resulting children be?
Also if you have identical femal twins and they both have a child with the same man, how close genetically will the children be?
And lastly, if male identical twins both have a child with the same woman.....you get the picture!
Quite a question over your porridge!"
I've been thinking about this for years!
Genetically identical twins are the same, but some mutations in the dna happen after the embryos split apart so there might be some differences. Simplifying it to a level that I could work out and actually understand, the children of two sets of identical twins would be just a little bit less similar than siblings from one set of parents. Children of one set of identical twins with the same person, woman or man, would still be a little bit less similar than siblings, but closer than children of two sets of twins because there is less chance for genetic variation. |
Reply privately, Reply in forum +quote
or View forums list | |
» Add a new message to this topic
just checking