In which step of $DNA$ profiling,nitrocellulose membrane is used?

Which step is $NOT$ correct in $DNA$ fingerprinting?

Which of the following is not useful for $DNA$ fingerprinting?

In $DNA$ fingerprinting,detection of hybridised $DNA$ fragments is possible by

Blood stains are found at the site of a murder. If $DNA$ profiling technique is to be used for identifying the criminal,which of the following is ideal for use?

Identify the given figure.