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Start learning 50% faster. Sign in nowØ The technique of polymerase chain reaction (PCR) is used to detect infectious organisms as well as mutations in specific genes. Ø PCR can be used to directly analyse the virus DNA in the case of diseases like AIDS, and it is more specific than the standardised detection done by ELISA. Ø Used to compare a person's DNA to a specific sample, such as blood collected at a crime scene. Ø The PCR may amplify DNA, and by utilising a specific marker, the precise gene that causes the disease can be identified.
The angle of elevation of a tower from a certain point of bus stand is 30°. When a man walks 5m ahead in the direction of the tower, the angle of el...