How is mitochondrial dna (mtdna) typing used in forensic science?


Mitochondrial DNA (mtDNA) typing is used in forensic science for it serves as an important tool in determining the recovered damaged, degraded or small sample source of the DNA. Mitochondrial DNA is a small genome that is found in the mitochondria, just outside of the nucleus of the cell. Usually, hair, bones, and teeth are the most common samples that are being examined for mtDNA.

(mtDNA) Used in forensic science


An unknown mtDNA test is coordinated to an example of mtDNA that was found at the wrongdoing scene.  This is the means by which mitochondrial DNA (mtDNA) composing is utilized in forensic science.  Not at all like atomic DNA composing, mtDNA seclusion is very simple since its number is very enormous.  mtDNA duplicates rang from 100 to 10,000 for every cell.  It is likewise more steady and more grounded than the atomic DNA that is the reason even unsolved cases from years back use mtDNA composing as reference for the conceivable end.Hence, the right answer is “An unknown mtDNA  sample is matched to a sample of mtDNA that was found at a crime scene”.

Mitochondrial DNA typing is a method used by forensic scientists which match the DNA of unknown sample to the sample collected from the crime scene.

This typing method posses several advantages over other nuclear DNA typing methods in forensic science as:

A large copy number of DNA (2-10 times) per mitochondria provide enough DNA sample.  Depending on the functions, a cell can have many mitochondria (1-100) which can provide enough sample for typing.
No recombination takes place in mitochondrial DNA so DNA sample remains unchanged over many generations. So, the sample can be matched easily with the relatives of the unknown sample.
Mitochondria show only maternal inheritance that they take DNA from mitochondria of the mother.
DNA is amplified using Polymerase chain reaction which undergoes direct sequencing.

Thus, mitochondrial DNA typing has several advantages in forensic science.

An unknown mtDNA sample is matched to a sample of mtDNA that was found at a crime scene.


Hope this helps…

If you remember mtDNA can be traced in a single person for generations, this means that with your mtDNA, you could see who else had those specifics (or rather similarities) hundreds of years prior to you, and hundreds of years ahead of you.

This is important because if you come across a sample of unknown mtDNA, you can match it to the correct person (or rather match it to a known mtDNA).  You can even match an unknown mtDNA to one found in a crime scene…


The answer is: An unknown mtDNA sample is matched to a sample of mtDNA that was found at a crime scene.

its b on edg


The crime scene has many evidences which can help to identify the criminal. The DNA sample that is found at the crime scene is matched with the unknown DNA.

This is the method by which the  Mitochondrial DNA can be used for knowing the criminal.

The unknown sample of DNA is matched with the sample of DNA after amplification. The amplified sample might match with the sample or might not match with the unknown sample.

the right answer on edg 2020 is b


hope this helps!!!

An unknown mtDNA sample is matched to a sample of nuclear DNA that was found at a crime scene.

MtDNA is a genome inside the mitochondria outside the cell’s nucleus 
valuable tool used to get the source of dna from small or damaged biological samples 

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