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Introduction to Evolution Video Lecture | Biology Class 12 - NEET
FAQs on Introduction to Evolution Video Lecture - Biology Class 12 - NEET
| 1. What is evolution? |  |
Ans. Evolution is the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the Earth.
| 2. How does natural selection contribute to evolution? | |
Ans. Natural selection is a key mechanism of evolution. It involves the process where organisms with favorable traits are more likely to survive and reproduce, passing on those traits to their offspring. Over time, this leads to the accumulation of beneficial traits in a population.
| 3. What is the role of mutation in evolution? | |
Ans. Mutations are changes in the DNA sequence of an organism. These changes can introduce new genetic variation into a population, which can then be acted upon by natural selection. Mutations play a crucial role in generating the genetic diversity required for evolution to occur.
| 4. Can evolution occur without natural selection? | |
Ans. While natural selection is a powerful driver of evolution, other mechanisms such as genetic drift, gene flow, and mutation can also contribute to the evolutionary process. Therefore, evolution can occur without natural selection, although it may not be as efficient or targeted.
| 5. How does the fossil record provide evidence for evolution? | |
Ans. The fossil record is a key piece of evidence for evolution as it shows a chronological sequence of life forms on Earth. Fossils of transitional forms between different species provide evidence of how species have changed over time, supporting the idea of common ancestry and evolutionary change.
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