After a recent murder took place, a DNA sample was collected at the scene. The s

Question

After a recent murder took place, a DNA sample was collected at the scene. The sample contains the following genotype: Eight suspects were identified by having motive or opportunity to commit the crime. As the forensic scientist, you were just granted a court order to obtain DNA samples from those eight individuals (anonymously identified as A-H). The chromosomal sequences from those three loci in the eight suspects are provided below. Assume all loci are homozygous (as in the forensic sample genotype above). Which (if any) of suspects A - H committed the murder? As part of your analysis, it might be useful to write out the genotype (using genetic nomenclature) of each suspect. How sure are you of your answer to the question above? What concerns (if any) do you have?

Explanation / Answer

according to me no one commited the murder from the eight individuals because the sequence of the sample found at the crime scene doesnt match with the sequence of eight individuals.

genotypes will be:

A :(GA)3/(GA)3 (TC)3/(TC)4   (AT)4/(AT)4

B: (GA)3/(GA)3 (TC)4/(TC)4   (AT)7/(AT)7

C:(GA)3/(GA)3   (TC)4/(TC)4   (AT)4/(AT)4

D:(GA)5/(GA)5   (TC)3/(TC)3   (AT)7/(AT)7

E:(GA)3/(GA)3   (TC)4/(TC)4   (AT)4/(AT)4

F:(GA)5/(GA)5    (TC)3/(TC)4   (AT)4/(AT)4

G:(GA)3/(GA)3    (TC)3/(TC)3 (AT)6/(AT)6

H:(GA)3/(GA)3    (TC)4/(TC)4   (AT)4/(AT)4

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