Why is DNA unique to each person?

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Solution

DNA:
DNA is known as the deoxyribonucleic acid.
It is comprised of nitrogenous bases, deoxyribose sugar, and phosphate backbone.
Every DNA is unique to each person although the DNA is composed of the same nitrogen-based molecules.
This is because the sequence of nitrogen bases is different in every person.
More than 99% of the DNA is same and it is less than 1% DNA which differs among individuals.

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Q. What is unique to DNA alone?

Is our DNA unique?

Statement 1: DNA fingerprint provides a unique pattern for comparison.

Statement 2: A particular arrangement of nucleotides in the DNA of a person gives the DNA fingerprint.

Statement 3: Nucleotide arrangement in the DNA of a person is very specific to the person.
Choose the correct option regarding the given statements.

According to the definition of DNA fingerprinting, it is the determination of nucleotide sequences of certain areas of DNA which are unique to every individual. How do we know which part of the DNA is unique to everyone?

Q. We can't exchange our organs and tissues with others because of our unique DNA then why we can transplant kidneys or why we can exchange kidneys?

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