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MissJones
I need a nap!
Member since 5/05 22136 total posts
Name:
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Stupid question about twins!
If identical twin sisters married identical twin brothers, would their kids look alike?
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Posted 4/30/07 6:01 AM  |
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CathyB
Member since 5/05 19403 total posts
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Re: Stupid question about twins!
I believe so. I seem to remember from high school biology that if this happened, the kids who would technically be cousins would look like siblings if you looked at their DNA.
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| Posted 4/30/07 6:44 AM |
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VirginiaDeb
Don't eat me, hippo!
Member since 5/05 9252 total posts
Name:
Deb
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Re: Stupid question about twins!
I have 1st cousins who married identical twin sisters... I'm really curious to see how similiar they look!
I would have to agree w/ the above poster though.
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| Posted 4/30/07 7:02 AM |
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GoldenRod
10 years on LIF!
Member since 11/06 26792 total posts
Name:
Shawn
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Re: Stupid question about twins!
Not necessarily. Just think about everyone who has more than one child. How many of them look alike? Some do, most do not. I don't look anything like my sister. There is a high probability that they cousins would look very similar, but not guaranteed.
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| Posted 4/30/07 8:48 AM |
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MsMBV
:P
Member since 5/05 28602 total posts
Name:
Me
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Re: Stupid question about twins!
Posted by GoldenRod
Not necessarily. Just think about everyone who has more than one child. How many of them look alike? Some do, most do not. I don't look anything like my sister. There is a high probability that they cousins would look very similar, but not guaranteed.
ITA. There is still the "recessive genes" factor.
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| Posted 4/30/07 9:21 AM |
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Elbee
Zanzibar
Member since 5/05 10767 total posts
Name:
Me
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Re: Stupid question about twins!
From: http://www.madsci.org/posts/archives/2000-01/948899968.Ge.r.html
The short answer is no, they will probably not be identical.
The cousins would be more closely related than most cousins since their
mothers and fathers are genetically identical. So while the cousins would
probably not be identical they would be as closely related genetically as
brothers and sisters (that is, children who share the same parents, since
genetically their parents are interchangable).
Remember we each have two copies of each of our genes, one from mom and one
from dad. These two copies are called alleles. Identical twins each have
the same two alleles for each gene but they too got one from mom and one
from dad so the two alleles for any one gene might not be identical to each
other.
Now if identical twins marry identical twins each of their children will
get one allele from mom and one from dad but there is only a 50/50 chance
of two children getting the same allele of any given gene. Since this
would be true for each gene it would be very unlikely that any two
offspring would get exactly the same set of all the genes. For the
offspring of two set of identical twins, the parents are essentially
interchangable but the moms have one genetic makeup and the dads another.
The offspring of either family would share from the same pool of genes and
so the cousins would be as closely related as brothers and sisters but not
identical.
Cloning,on the other hand, occurs when the entire genetic makeup of one
individual is used to create another. In this case there is no
recombination of alleles and the donor and the offspring share all of
their alleles for every gene (they are genetically identical, like
identical twins).
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| Posted 4/30/07 9:25 AM |
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Diane
Hope is Contagious....catch it
Member since 5/05 30683 total posts
Name:
D
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Re: Stupid question about twins!
I dont think they will.
I know Identical twins is supposedly NOT genetic, because it is just a "freak" of nature of the egg splitting.
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| Posted 4/30/07 9:52 AM |
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