The difference between an element and a compound is that an element is a substance made of same type of atoms, whereas a compound is made of different elements in definite proportions.
(July 2010). Molecular anthropology is a field of anthropology in which molecular analysis is used to determine evolutionary links between ancient and modern human populations, as well as between contemporary species.itochondrial DNA offers another advantage over autosomal DNA. There are generally 2 to 4 copies of each chromosome in each cell (1 to 2 from each parent chromosome). For mtDNA there can be dozens to hundreds in each cell.
Traditional STR analysis can be used to create a DNA profile from weakened evidence but materials like blood or semen may be too destroyed for PCR testing to generate an accurate profile. However, the hair shaft can be analyzed using mtDNA and can then play an important role in solving the case.