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How do variations arise in organisms ? ‘‘Variation is useful for the survival of species.’’ Justify this statement with the help of an example.
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Variations may arise due to small inaccuracies in DNA copying during reproduction as well as a result of sexual reproduction where genetic materials from two different organisms combine to form a new organism.
During adverse conditions some variations may give survival advantage to the organism e.g. a population of bacteria living in temperate waters. If the temperature of water increases suddenly then most of the bacteria would die but few variant bacteria resistant to heat would survive and grow further.
During adverse conditions some variations may give survival advantage to the organism e.g. a population of bacteria living in temperate waters. If the temperature of water increases suddenly then most of the bacteria would die but few variant bacteria resistant to heat would survive and grow further.
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| Question Text | How do variations arise in organisms ? ‘‘Variation is useful for the survival of species.’’ Justify this statement with the help of an example. |
| Updated On | Feb 15, 2023 |
| Topic | Heredity and Evolution |
| Subject | Science |
| Class | Class 10 |
| Answer Type | Text solution:1 Video solution: 1 |
| Upvotes | 216 |
| Avg. Video Duration | 8 min |
