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

CBSE CLASS XII Related Questions

1.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

25%
50%
75%
100%

View Solution

2.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

View Solution

3.
A student performed some crosses in plants and represented the result in the form of bar graphs as shown below. Each graph displays the phenotypic proportion of the progeny. Study the graphs and answer the questions :
(c) What conclusion can you draw from the results of bar graphs of crosses I and II ? Name the genetic principle illustrated.

View Solution

4.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

P - Seed, Q - Thalamus, R - Mesocarp, S - Endocarp
P - Thalamus, Q - Seed, R - Endocarp, S - Mesocarp
P - Seed, Q - Thalamus, R - Endocarp, S - Mesocarp
P - Thalamus, Q - Seed, R - Mesocarp, S - Endocarp

View Solution

5.
Assertion (A): The embryo with 8 to 16 blastomeres is called a morula.
Reason (R): The morula continues to divide and transform into trophoblast.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

6.
Identify the plant in which emasculation is not required for artificial hybridization.

Rice
Wheat
Pea
Papaya

View Solution

What is DNA copying? State its importance.

Importance of DNA Copying

CBSE CLASS XII Related Questions

1.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

2.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

4.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

5.
Assertion (A): The embryo with 8 to 16 blastomeres is called a morula.
Reason (R): The morula continues to divide and transform into trophoblast.

6.
Identify the plant in which emasculation is not required for artificial hybridization.

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What is DNA copying? State its importance.

Importance of DNA Copying

CBSE CLASS XII Related Questions

1.In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

2."Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

4.Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

5.Assertion (A): The embryo with 8 to 16 blastomeres is called a morula. Reason (R): The morula continues to divide and transform into trophoblast.

6.Identify the plant in which emasculation is not required for artificial hybridization.

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

2.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

4.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

5.
Assertion (A): The embryo with 8 to 16 blastomeres is called a morula.
Reason (R): The morula continues to divide and transform into trophoblast.

6.
Identify the plant in which emasculation is not required for artificial hybridization.