Question

DNA probe is used for

• A. DNA fingerprinting
• B. Detection of pathogenic bacteria
• C. Medical genetics to find whether a person carries a particular gene or not
• D. All the above

Answer 1

Answer: (D)

DNA probes are the short, single-stranded, labelled DNA sequences used to detect the presence or absence of nucleic acid in a sample. DNA probes are 100 to 10000 base pair long that are tagged with either radioisotopes or fluorochromes. It is used in medical and food industries, forensics, environmental science and microbial identification.