What is DNA copying? State its importance.

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DNA copying, known as DNA replication, is the process of producing two identical DNA copies during cell division from an original DNA molecule.

It helps in generating variations during sexual reproduction leading to evolution.
DNA copying also helps to transfer characteristics or information from parents to the offspring.
DNA is formed of a double helix structure that has 2 complementary strands.
During DNA copying, the 2 complementary strands get separated.
RNA is involved in the process of replication. DNA copying in the eukaryotic cells occurs in the S phase of the cell cycle.

DNA Copying

Importance of DNA Copying

DNA Copying or Replications is important as –

DNA Replication helps in the transmission of traits from parents to their children.
It ensures that the daughter cell produced as a result of cell division receives an identical DNA amount.
It leads to evolution by producing variety in sexual reproduction.

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Related Topics
Difference between Replication and Transcription	DNA Polymerases	DNA Genetic Material
Molecular Basis of Inheritance	Stages of Transcription	Difference between DNA and RNA
Packaging of DNA	Genetics and Evolution	DNA Fingerprinting

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Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

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The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

What is DNA copying? State its importance.

Importance of DNA Copying

CBSE CLASS XII Related Questions

1.
Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

2.
How does a chromosomal disorder differ from a Mendelian disorder ? Write one example for each.

3.
(I) Write the scientific names of the two species of filarial worms causing filariasis.
(II) How do they affect the body of infected persons ?
(III) How does the disease spread ?

4.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected ? Write its symptoms as well as karyotype.

5.
Mention the source and the functions of the above mentioned hormones.

6.
The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

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What is DNA copying? State its importance.

Importance of DNA Copying

CBSE CLASS XII Related Questions

1.Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

2.How does a chromosomal disorder differ from a Mendelian disorder ? Write one example for each.

3.(I) Write the scientific names of the two species of filarial worms causing filariasis. (II) How do they affect the body of infected persons ? (III) How does the disease spread ?

4.Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected ? Write its symptoms as well as karyotype.

5.Mention the source and the functions of the above mentioned hormones.

6.The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

2.
How does a chromosomal disorder differ from a Mendelian disorder ? Write one example for each.

3.
(I) Write the scientific names of the two species of filarial worms causing filariasis.
(II) How do they affect the body of infected persons ?
(III) How does the disease spread ?

4.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected ? Write its symptoms as well as karyotype.

5.
Mention the source and the functions of the above mentioned hormones.

6.
The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.