‘There is a paternity dispute for | Class 12 Biology Chapter Molecular Basis of Inheritance, Molecular Basis of Inheritance NCERT Solutions

Question:

‘There is a paternity dispute for a child’. Which technique can solve the problem. Discuss the principle involved.

Answer:

DNA fingerprinting is defined as the technique which is used in solving the paternity dispute for a child. This is a technique of determining nucleotide sequences of certain areas of DNA which are unique in each individual.

The DNA fingerprinting is based or works on the DNA polymorphism. Although the DNA from different individuals is more alike than different, there are many regions of the human chromosomes that exhibits diversity in its form. These types of variable sequences are known as polymorphic.

A special type of polymorphism known as VNTR (Variable Number of Tandem Repeats) which is composed of repeated copies of a DNA sequence and that lie adjacent to one another on the chromosome. Since, polymorphism is the basis of genetic mapping in human beings.  


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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 6: ‘There is a paternity dispute for a child’. Which technique can solve the problem. Discu....