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/sci/ - Science & Math

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10825371 No.10825371 [Reply] [Original]

If a pair of twins marry a pair of twins, what's the probability that they have two identical kids?

>> No.10825374

>>10825371
Two identical kids as in: one couple has one kid that looks like the other couple's kid

>> No.10825385

>>10825374
They can have kids that look like one another alright, in the same way that siblings can look a lot like each other. But never identical anon

>> No.10825397

>>10825371

the same probability as two siblings that look exactly alike but were born in different years...

..with some Bayesian stuff thrown in because one kid would have to be born first...

>> No.10825414

>>10825371
50/50
Either they do or they dont

>> No.10825460

>>10825414
But they're identical so it's 50% on one and 50% on the other which is 100% altogether. This is why twins are not allowed to marry or have children together.

>> No.10825464

>>10825385
Siblings are not same as identical twins. Identical twins are literally separate from the same cell.

>> No.10825471

>>10825371
Lets say each couple has one kid each. First the kid can take either gender. So that's 50/50% already. Then the kid can take either side's trait. So that's additional 25%/25%. With two having to be similar that's 6% chance.

>> No.10825481

In terms of genetics, the children would be siblings, while in theory actually being cousins. But odds on them being twins? No. Interesting idea but twins share the same womb and all that. The fact they'd be born at different times alone rules out twins. There'd be insanely slim odds, but they could genetically be the same.. But that wouldn't be twins.

>> No.10825487
File: 1.77 MB, 320x180, DBA4B221-C258-40E1-B16A-CA67C31EDD61.gif [View same] [iqdb] [saucenao] [google]
10825487

>>10825460
>But they're identical so it's 50% on one and 50% on the other which is 100% altogether. This is why twins are not allowed to marry or have children together.

>> No.10825597
File: 474 KB, 1667x2432, twins3.jpg [View same] [iqdb] [saucenao] [google]
10825597

it's extremely unlikely

>> No.10825811

>>10825471
Some of the most flawed logic i have ever seen

>> No.10826044

>>10825471
uwot m8
do u genetix/?

>> No.10826279

23x2 chromosomes
Same probability to pick the same combination twice.

>> No.10826359

>>10825371
They don't. Even identical twins have different DNA thanks to epigenetics.

>> No.10827705

>>10826359
>Even identical twins have different DNA thanks to epigenetics.
oh shit, didn't know that

>> No.10827794

>>10827705
Tbf, the differences between identical twins' DNA is pretty minuscule compared to their similarities.Like 99.99% the same versus 100% the same.

>> No.10827851

>>10825371
100% if IVF was used to create twins as your picture probably shows.

>> No.10827860

>Brainlets in this fucking thread
Did you even study biology at school?

During meiosis, chromosomes are randomly and independently assorted at the equator of the cell before the cell is split in half twice, forming 4 genetically distinct gametes. Due to there being 23 pairs of gametes, a person can create gametes with 2^23 (8,388,608) combinations of chromosomes. This would be squared when you take into account a zygote is made of a gamete from each parent. So there are 70,368,744,000,000 combinations of the two gametes.

Additionally, before splitting, each homologous pair of chromosomes will touch and swap genetic material between non-sister chromatids in a process called 'crossing over'. This always happens, and swaps genetic information from paternal chromosome with maternal. This means even if a gamete happened to have entirely paternal chromosomes (1/8,388,608 chance) they would all have some maternal DNA, due to crossing over. So there is an unfathomable number of ways the DNA can be swapped between non-sister chromatids, between 23 homologous pairs in 2 different people.


If we are to simplify genetics and treat these two pairs of married twins as the same couple, as well as removing any chance of aneuploidy causing issues (e.g. Down's syndrome), anticipation of trinucleotide repeats causing issues (e.g. Huntington's and Fragile-X), genetic imprinting causing issues (e.g. Angelman's & Prader-Wili) and also ignoring the fact that crossing-over happens:

There's a 1 / 70,368,744,000,000 chance that the same combination of gametes could happen in the two couples.
But, if you don't ignore all that stuff above, then the answer is unfathomably small.

>> No.10828028

>>10827860
Now that's the answer I was waiting for. Thank you kind anon.

>> No.10828036

>>10825371
that's hot as fuck to achieve that reproduction they had to impregnater them in the pussyier, like com cum inside, holding storngly down penis inside vagina and WASSSHHH expulsion of semen inside the fertile womb.


TWO TIMES

they ahve to have thought abotu it

this doesnt ocurr by chance, also they seem to be born at more or less same time, so they agreed

they agreed to impregnate in the vagina at samet ime sthat is so very good impregnation of the fertile vagina is scientifically good thing demonstrated good feeling because of soft enveloping hard until pleasure explodes, it is a fact of demonstaration

>> No.10829176

>>10828036
>that's hot as fuck
dude what

>> No.10829183

>>10828036
true

>> No.10829193

>>10828036
my thoughts exactly

>> No.10829227

>>10825374
for Asians, 100%

>> No.10829261
File: 21 KB, 411x334, 1246416614319.jpg [View same] [iqdb] [saucenao] [google]
10829261

>>10828036
>they agreed to impregnate in the vagina at samet ime sthat is so very good impregnation of the fertile vagina is scientifically good thing demonstrated good feeling because of soft enveloping hard until pleasure explodes

>> No.10829269

>>10828036
What fucking word salad porn site comment hell is this

>> No.10830077

>>10828036
what the fuck is this shit lmao

>> No.10830303

>>10829227
But that's the case even for complete strangers.

>> No.10831604

>>10825597
you're a big guy

>> No.10831758

>>10825371
>identical twins
>asian
How could you even tell?

>> No.10831766

>>10828036
My fucking sides

>> No.10831790
File: 54 KB, 466x495, gzponadomdk01[1].jpg [View same] [iqdb] [saucenao] [google]
10831790

>>10828036
All I can think of is this picture, it's bad enough I can't stop laughing as it is but now that I went back to find it it's getting hard to breathe.

>> No.10832000

>>10831790
lol what the fuck was that pic wven translatingin the first place

>> No.10832283

>>10825371
Nearly impossible due to independent assortment/crossing over

>> No.10832294

>>10828036
Imagine how good twin pussyier feel at the exact same time

>> No.10832296

>>10832000
>high class weapons
for kids