within a day of each other. She finds out she's pregnant but doesn't know who the father is? How can she determine this with DNA tests if the brother's are IDENTICAL twins??
This is not a riddle I'm watching the Riki Lake show and it has come up..
AND NOT THIS DOES NOT APPLY TO ME!!! I don't want anymore kids and have one already!!!
2007-02-22 03:04:56 · 19 answers · asked by Anonymous in Science & Mathematics ➔ Biology
,Okay i was wrong the first time, you can't as they were both part of the same zygote at first when fertilised but then separated, making their DNA the same.
2007-02-22 03:08:16 · answer #1 · answered by Anonymous · 1⤊ 3⤋
Great question.
Well if she is keen to know there is a chance that she could tell but it will cost her a lot, and it is not guaranteed it would work 100%. First she has to do paternity test to see if these guys are real fathers. Assuming it is not 3rd guy :) the procedure would be like this: One would have to sequence DNA of both of them, and check if there are some DNA changes between the two (that are due to spontaneous mutations) (the type of tissue for sequencing I wont discuss here but it is obvious that it has to be the one giving the rise to the sperm, because not all cells in our organism have identical DNA). There is high probability (not 100%) that one would find few bases changed on some places in DNA. IF THIS IS TRUE (it don`t has to be) than there are two approaches: 1. To sequence DNA of a kid
OR
2. Hope that DNA mutation is introducing or removing some of the restriction sites and than amplify the region around the restriction site from both potential fathers and the kid and cut it with the enzyme. The kid should have the same profile on that site like the father and both should be different compared to the one which is not the father.
Sequencing doesn't always work 100% accurate, it takes time and it cost a lot. Sequences might change and don`t have to. There is high probability but it is also matter of when it happened and where it happened between the twins. If it happens early during development than all the cells will have it otherwise you have to be happy that it happened in the germ cell lineage etc.
So this what I described here is just theoretical possibility for which there is a reasonable probability that would work but there are no guaranties.
2007-02-22 04:03:52 · answer #2 · answered by I O 2 · 0⤊ 0⤋
Identical twins are formed when a single fertilised egg divides into two following cell division so the resulting embryos and subsequently individuals have exactly the same genetic profile (DNA), its identical. All cells within these two individuals would be identical so there is no way of determining paternity of the crime as the offsprings DNA could be familial matched to the mother, the father and in this case the fathers brother.
2007-02-23 11:14:50 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Identical twins have identical nuclear DNA, but they have different extranuclear DNA in their mythocondria. The problem with your question is that mythocondria and their DNA is inherited directly from mother to offspring, so the father doesn't contribute with extranuclear DNA and it can't be compared, because it would be the same as the mother's. Eventhough strictly speaking the DNA in twins wouldn't be 100% identical, the method for doing a paternity test is based in a comparison between the weight of nuclear DNA of the father and the child or in case it is a baby boy, they compare the Y chromosome. So, in short, it is not possible to find out with the test so far available.
2007-02-22 13:24:41 · answer #4 · answered by Lara Croft 3 · 0⤊ 0⤋
No, a paternity try does no longer be waiting to verify who fathered a newborn if the two applicants have been comparable twins, as their DNA is comparable. i do no longer watch cleansing soap operas, yet i'm specific this plot has in all hazard been used as i comprehend that comparable twins and incorrect identities are prevalent storylines.
2016-10-16 06:06:14 · answer #5 · answered by dudik 4 · 0⤊ 0⤋
The DNA from identical twins is the exact same. Therefore there is no method to determine paternity between two twin men.
2007-02-22 03:14:19 · answer #6 · answered by Brandon F 3 · 1⤊ 0⤋
Bad luck, she probably can't tell. Sounds like they took her for a ride! Both of them will have to be held responsible, unless one of them steps forward to take sole responsibility.
There may be one or two chance differences here and there in the genome, but on the whole the fathers' DNAs will be identical and impossible to tell apart using standard paternity techniques. Unless somebody knows something I don't know!
2007-02-22 03:11:42 · answer #7 · answered by Alyosha 4 · 1⤊ 1⤋
DNA replication is not perfect. There may be one or more detectable differences between identical twins. If the child carries one of these, It would be possible. This has not been tested, to my knowledge, so the probability is indeterminate.
2007-02-22 03:15:28 · answer #8 · answered by novangelis 7 · 1⤊ 1⤋
Identical twins have identical DNA. They would not be able to determine. I've seen it on Maury before....lol see talk shows can teach you things!
2007-02-22 03:13:30 · answer #9 · answered by ○•○•Cassie•○•○ 6 · 1⤊ 1⤋
They wont be able to tell paternity as far as I'm aware.
They are identical down to there genes from what you say.
.
2007-02-22 03:21:29 · answer #10 · answered by Anonymous · 1⤊ 0⤋
i tink there dna s gonna e the same cos thy came otut the same time. they are identical
i gonna putt on ricki lake now and watch
that womans such a **** why would she do that for
2007-02-22 03:18:59 · answer #11 · answered by Anonymous · 0⤊ 1⤋