If identical twins have the same DNA, y r their fingerprints different? Does that mean they don't share the same DNA?
2006-09-28 00:51:24 · 18 answers · asked by whatever 2 in Science & Mathematics ➔ Biology
Plz guys, give me logical answers.Yes, identical twins have the same DNA but diff. fingerprints. To the best of my knowledge, fingerprints shud be the same as it is a hereditary characteristic controlled by DNA.
2006-09-28 01:03:07 · update #1
twins have same DNA because the are derived from same cell.
but fingerprints are different because fingerprint is result of expression of DNA. DNA transcript to form m-RNA, which upon translation give protein which may act as building block for cell or an enzyme or a Harmon or other messenger. at same locus of DNA there may be presence of different gene for same characters.expressions of gene is totally random. fingerprint is results of expressions of gene present at same locus of DNA. so, probability of expression of same gene for same character is very minimum.
2006-09-28 05:15:28 · answer #1 · answered by RAJENDRA 2 · 2⤊ 0⤋
They DO have the same DNA.
Even with the same DNA, there is a degree of randomness that occurs in fetal development. The fingerprints reflect some of that randomness. Although the identical DNA contains identical information about how to make a fingerprint, the actual making of the print occurs somewhat randomly.
Most identical twins can be told apart by people that know them. They might still have slight differences in the shape of their face, their exact height, the patterns in their eyes, etc.
By the way, it is fraternal twins that do NOT have the same DNA. Identical twins are identical because they both came from the same zygote which split into two after the DNA was copied.
2006-09-28 08:01:21 · answer #2 · answered by crazyperson1972 5 · 4⤊ 0⤋
1.Identical twins come from the same embryo, the same egg and same sperm. It just happens to split leaving two offspring with the same DNA.
2.There can be small changes due to mutations, but these would likely be insignificant as typicall a one base pair difference does't typically change much.
3.In terms of DNA profiling only 13 loci (places on the genes) are used, and what is recorded are the number of repeats in the sequence.
4.They loci are satellites, which mean they are the same sequence repated over and over, so they don't even test for the actual sequence of basepairing. Identical twins would have the same outcomes in this repect.
5.Twins do however have differing fingerprints because the general pattern is coded for but as they develop in the wobs the environment is going to play a role and they will be the same general pattern to each finger but there will be differences. In terms of the comment about one helix being from mom, what are you thinking.
6.You get one full chromosome from mom, and one full chromosome from dad. Each of these chromosomes is a double helix and you have 46 of them. 23 from dad and 23 from mom.
7.The only thing that is exclusive to mom is your organelles in your cells since she provided the egg, which is a cell where as dad just gave a nucleus from a cell. There is some DNA in the midochonrion, the organelle that does cell respiration, abd this DNA is exclusovly matrilinial.
8.All your siblings from the same mom will also share it aside from samll mutations, but for it to have any real difference it would take many generations to really differ noticably at all.
2006-09-28 08:20:55 · answer #3 · answered by Ritz 1 · 3⤊ 0⤋
As i understand it, your fingerprints are formed by the folding of your skin, and have very little to do with any sort of expression of protein. Try it for yourself if you like. Get a piece of paper, and wrap up a tube or bottle completly. Now do it again with another one - are the folds exactly the same?
If they are monozygotic twins then they have the same DNA but if they come from seperate fertilisation events then they will not.
2006-09-28 12:32:37 · answer #4 · answered by Bacteria Boy 4 · 3⤊ 0⤋
DNA and Finger prints are different. Fingerprints are formed randomly nothing to do with DNA. Same Linke Snow Flakes.
Same properties but different.
2006-09-28 07:56:25 · answer #5 · answered by Mr. Love 1 · 2⤊ 1⤋
who say to u identical twins have the same DNA. Any type of twins or person not have same DNA. Fingerprints not reflect DNA
2006-09-28 08:26:50 · answer #6 · answered by prashant_kanpur 2 · 1⤊ 2⤋
Same DNA fingerprints mirror image
2006-09-28 09:48:28 · answer #7 · answered by Anonymous · 1⤊ 2⤋
Yes they have same DNA but during the replication of the DNA the amino acids may orient in a different manner than the other twin. Hence you have different fingerprints!!!!!!!!!!!
2006-09-28 08:15:01 · answer #8 · answered by Christa 2 · 2⤊ 2⤋
dna is the testing of blood or cells including any fluid dna has nothing to do with finger prints there is not one person with the same print that is why police use it in a crime if you had a twin and they did the crime they would do the time since everyones finger prints are diffrent if you change your prints by burning or cutting your fingers your dna is the same does not change and from my under standing even if you are a twin you have a small diffrance in dna
2006-09-28 08:05:29 · answer #9 · answered by greg m 2 · 1⤊ 2⤋
They will share the same DNA because of the characteristics of the chromosomes.
2006-09-29 02:52:45 · answer #10 · answered by SABHA A 2 · 0⤊ 2⤋