Question

The basis of DNA finger printing is 
1. The double helix
2. Errors in base sequence
3. DNA replication
4. DNA Polymorphism

Answer 1

Correct Answer - Option 4 : DNA Polymorphism

• DNA fingerprinting is a chemical test that shows the genetic makeup of a person or other living things. It's used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease.
• DNA Polymorphism is the basis of genetic mapping of the human genome as well as DNA fingerprinting in DNA sequence. DNA Polymorphism is any difference in the nucleotide sequence between individuals. These differences can be single base pair changes, deletions or insertions of a given DNA sequence.

Term	Definition
Double helix	The double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. James Watson and Francis Crick discovered the double-helix shape of DNA.
DNA replication	DNA replication is the process by which DNA makes a copy of itself during cell division and make two identical replicas of DNA from one original DNA molecule.
DNA Polymorphism	DNA Polymorphism is any difference in the nucleotide sequence between individuals. These differences can be single base pair changes, deletions or insertions of a given DNA sequence.