a: Mitochondrial dna ~
b: twisted pearl necklace
What: DNA structure is like a twisted pearl necklace.
Of course this analogy can only be taken so far. Pearls are generally homogenous in term of size and shape. The base pair sequence in DNA will vary considerably. The picture in the link is good visual initiation.
Date: Jul 10 2010 2:05 AM
Dna Testing As Biochemcial Geneology
a: Mitochondrial dna testing ~
b: maternal biochemcial geneolgy
What: As note just about every where, mammals, human beings can trace their maternal lineage by having their mitochondrial DNA sequenced. This DNA does not cross-over with male DNA and therefore its sequence shows much lower variability than nuclear DNA that has been recombined with paternal DNA. So a comparison of an individuals DNA to other's DNA can give a hint about how closely they may be related, on the mother's lineage.
Where: Reference Link Has Evaporated
Date: Dec 16 2011 1:15 AM
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