Can DNA test identify a distant relative?

  1. Admiral_Joraxx profile image79
    Admiral_Joraxxposted 6 years ago

    Can DNA test identify a distant relative?

    I noticed most of the DNA testing in movies are done for direct parental identity. Is DNA also useful for identifying distant relatives? For example what if a very rich man wants to identify if a child is really the grandson of his mother's youngest sister and all of the child's nearest family members, e.g his parents, siblings, grand parents where all gone. Can DNA be tested between the man and the child to identify their family relation?

  2. conradofontanilla profile image79
    conradofontanillaposted 6 years ago

    Yes, DNA can identify a distant relative. Looks or appearance is a manifestation of information encoded in three nucleotides in sequence, for example shape of lips. Such nucleotides are heritable since they are contained in the chromosome that are carriers of heredity. Some nucleotides in a gene pool, meaning a clan, are identical, others are not. Identical nucleotides, for height for example, can be found by DNA test. In identical twins a lot of genetic information (three identical nucleotides in the same sequence) are common to both. Not so in fraternal  twins. Identical twins are virtual clones though since they had been fertilized by one "seed." Fraternal twins had been fertilized by two separate "seeds"; they are a brother and a sister born in immediate sequence.
    For example, the amino acids guanine (G), arginine (A) and thymine (T): a sequence of GAT produces one kind of protein, the sequence AGT produces a different protein. These proteins compose the body.
    I have a Hub "Why Criminals Cannot Fool and Escape from DNA Fingerprinting" that gives more details.   
    Bobby Fischer was reported to have a child by a Filipina. So the child was DNA tested. If she were Bobby's daughter she would inherit a fortune (largely the prize money in the Fischer-Spassky chess match held in Czechoslovakia)as Bobby had died in Japan.

 
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