Question

What is the effect of DNA copying which is not perfectly accurate on the reproduction process? How does the amount of DNA remain constant through each new generation is a combination of DNA copies of two individuals?​

Answer 1

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DNA copying is not perfectly accurate. During reproduction , no bio-chemical reaction is absolutely reliable so the process of copying the DNA will have some variations each time. As a result, the DNA copies generated will be similar but may not be identical to the original. Thus the surviving new born cells are similar to but slightly different from each other. This inbuilt tendency for variation during reproduction is the basic for evolution, and this is how the evolution process starts. DNA remains constant. The DNA in the cell nucleus is the information source for making proteins.

The basic event in reproduction is the creation of a DNA copy. Cells use chemical reaction to build copies of there DNA. This creates two copies of the DNA in a reproducing cell, and they will need to be separated from each other. The DNA copies and get separated forming it's own cellular apparatus and maintaining life process.

Answer 2

DNA copying is not perfectly accurate. During reproduction , no bio-chemical reaction is absolutely reliable so the process of copying the DNA will have some variations each time. As a result, the DNA copies generated will be similar but may not be identical to the original. Thus the surviving new born cells are similar to but slightly different from each other.