The probes for DNA fingerprinting are _________.

Unknown single stranded labelled DNA

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Unknown double stranded labelled DNA

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Known single stranded labelled DNA

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Known double stranded unlabelled DNA

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Solution

The correct option is C Known single stranded labelled DNA
A probe is a sequence of DNA or RNA that is radiolabeled and can be used in the detection of a target genome. DNA fingerprinting uses single-stranded radioactive probes which are washed over the nylon surface to allow their joining to any DNA fragments of same composition thereby matching different DNA samples. Thus the correct answer is option C.

Suggest Corrections

Organelle / organism	Type of DNA
(A) Chloroplast	(p) Double stranded circular DNA
(B) Mitochondria	(q) cpDNA
(C) E. coli	(r) Single stranded circular DNA