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P-2 Heredity and Evolution — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-2 Heredity and Evolution3 Marks
Question
Observe the figure 1.6 given on page 10 from this chapter. Answer the following question based on your observations:
Image

What is the significance of this figure from the viewpoint of evolution? Explain in brief.
✓

Answer

In the figure, the process of mutation is shown. The original nucleotide sequence of TGC is replaced by new mutated sequence GAT. The change in the nucleotide sequence will change the DNA.

This will result in the change in genes and then changing the hereditary characters. Due to such change in genes, the evolution proceeds. The mutation so formed can be minor or major. The greater the impact of the change, the evolution takes place rapidly. The mutation thereby produce recombinations leading to diversity.

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