2007-06-27 00:44:40 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Biology
I'll have a shot at answering your incomplete question.
DNA between sisters should be about a 25% match.
50%(Father) x 50%(Mother) = 25% for siblings.
.
2007-06-27 01:14:04 · answer #1 · answered by Labsci 7 · 0⤊ 0⤋
Inheredited DNA for sisters (siblings) may theorectically match anywhere from 0% to 100% but usually falls around 50%.
Each parent has two copies of each gene and they pass on one. Theorectically, they can happen to pass on the exact same copies of the genes to a second child in a second pregnancy but with all the possible combinations that is not likely to happen. The parents may also pass on the other set of genes and have none of them the same. But since people should always be homozygous for some characteristics (have two copies of the exact same bit of genetics) this theorectically near impossible.
On the average, each parent would pass on 50% of the same genetics to the second sibling, making 50% of the genetic material the same between two. With the homozygous factor added in, the individual genes are usually the same well more than 50% of the time.
In DNA-typing, they only look at certain genetic markers that have a wide variation in the human population, not all genes. Many or even most genes are identical in entire human population (it is what makes us human :-) ) and are useless for identifying purposes (ie insulin genetics).
Bottom line is that the amount of similar DNA between biological sisters varies.
2007-06-27 09:39:35 · answer #2 · answered by drrabbit 2 · 0⤊ 0⤋
Your question is a bit incomplete. DNA for sisters...what? Sisters naturally have DNA that can match them as sisters..
2007-06-27 07:49:28 · answer #3 · answered by lawlis1971 2 · 0⤊ 0⤋
An incomplete question usually yields an incomplete answer, but I'll take a swing at it.
We normally have two of each chromosome, one from each parent. These paired chromosomes are sometimes referred to as sister chromosomes, or how you stated it (kinda) sister DNA.
2007-06-27 08:01:59 · answer #4 · answered by Trevin M 2 · 0⤊ 0⤋
and? Yes Sisters have DNA not identical DNA if thats what you wanted to know...try again later.
2007-06-27 07:52:02 · answer #5 · answered by Knownow't 7 · 0⤊ 0⤋
Mitochondrial DNA would be identical
2007-06-28 18:10:46 · answer #6 · answered by Lara Croft 3 · 0⤊ 0⤋
it refers to the sister chromatins
the chromosomes after cell division attach to each other ,these are referred as sister chromatins.
2007-06-27 08:06:26 · answer #7 · answered by prasanna s 1 · 0⤊ 0⤋
question isnt clear on what you want, do you want a test go to the gp to find more information on it thats the best thiogn to do
2007-06-27 07:54:13 · answer #8 · answered by xXx pink princezz xXx 5 · 0⤊ 0⤋
jeremy kyle!
2007-06-27 07:47:14 · answer #9 · answered by Rach 2 · 0⤊ 0⤋
i didnt get ur question???
may b i cud hav helped u.......
2007-06-27 09:04:25 · answer #10 · answered by ressnick rogers 2 · 0⤊ 0⤋