A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of an extinct dodo (a bird). To compare a specific region of the DNA from a sample with DNA from living birds, which of the following would be most useful for increasing the amount of dodo DNA available for testing? a. SNP analysis b. polymerase chain reaction (PCR) c. electroporation d. gel electrophoresis

Video transcript

Hello everyone here We have a question telling us three individuals were suspected of killing an old lady in her apartment apart from the blood sample collected around the victim's body. A blood sample was also collected at the victim's doorsteps To identify whose blood it is. A. D. N. A fingerprinting needs to be done to do this. An ample amount of DNA from the sample must be generated, identify which of the following techniques would generate the number of DNA copies to make the analysis possible. So a preliminary chain reaction is used to amplify a select sequence of D. N. A. And this can make millions to billions of copies. So that would be enough to make the analysis possible. And that is our answer. Preliminary chain reaction. Thank you for watching. Bye.