NCERT Solution for Class 10 Science Chapter 8
How do Organisms Reproduce?
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-128
Questions No-1
What is the importance of DNA copying in reproduction?
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NCERT Solution for Class 10 Science Chapter 8
How do Organisms Reproduce?
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-128
Questions No-1
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell. The DNA is the information site for making proteins and each specific type of protein leads to a specific type of body design.
Thus, it is the DNA molecule that determines the body design of an individual. Therefore, it can be concluded that it is the DNA that gets transferred from parents to offsprings and makes them look similar.
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DNA determines the body design of an individual. The DNA that gets transferred from parents to offsprings makes them look similar. DNA copying is important for reproduction. Additional copies of DNA are made during replication which is necessary for the new cells formed after cell division.
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell.
DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed and the structure of the individual will be entirely different.
Importance of DNA copying in reproduction is:-
1) It contains information about inheritance from parents to offspring.
2) It codes for proteins required by an individual.
3) If DNA is not copied during reproduction, correct proteins will not be formed and
the structure of the individual will be entirely different.
4) Errors in DNA copying will lead to evolution.
5) It makes the organism look similar to each other.
Importance of DNA copying in reproduction are as follows –
(i) DNA copying is the basis of inheritance of traits from parents to offspring.
(ii) During copying of DNA, sometimes slight variations occur which form the basis for evolution.
DNA contains information for inheritance of features from parents to next generation. During reproduction, a parent cell may directly give rise to the daughter cell, or indirectly by formation of gametes. In either case, the new cell produced must contain information present in the parent cell to form its own proteins. Thus DNA copying is essential, so that the daughter cells may have their own sets of chromosomes, having same information, as that in the parent cell.