- The chemical structure of everyone's DNA is the same.
- The only difference between people (or any animal)
is the order of the base pairs.
- There are so many millions of base pairs in each
person's DNA that every person has a different sequence.
-There are high diversity due to presence of non encoding
areas in the strand either in the genetic area
or outside it see here...
- Using these sequences, every person could
be identified by the sequence of their base pairs.
- Each person has a unique DNA fingerprint,
except monozygous (identical) twins.
- DNA fingerprint is the same for every cell,
tissue, and organ of a person. It cannot be
altered by any known treatment. Consequently,
DNA fingerprinting is rapidly becoming the primary
method for identifying and distinguishing among
individual human beings.
- These patterns do not, however, give an
individual "fingerprint," but they are able to
determine whether two DNA samples are from the
same person, related people, or non-related people.
Scientists use a small number of sequences of DNA
that are known to vary among individuals ,
and analyze those to get a certain probability of a matching.
------------------------------------------------
**Practical Applications of DNA Fingerprinting**
1. Paternity and Maternity :
when a father deny that a certain child is belonging
to him Or tow sets of parents claim on one child.
2. Criminal Identification and Forensics:
- In living (strong evidence of involvement
in assault,rape, disputed paternity)
as DNA isolated from blood,hair, skin cells,
or other genetic evidence left at the scene
of a crime can be compared with the
DNA of a criminal suspect .
- In Dead (DNA survives in bone for many years,
comparison of DNA with family members)
3. Personal Identification .
Enjoy it,see you,
Ibrahim
Ibrahim
see this article
ReplyDeletehttp://corazonhispano.blogspot.com/2009/01/ansiedad-e-infartos-al-corazn.html
translate from spanish
Sonnet
ReplyDelete=====
Thank you for your care
I saw it.