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प्रश्न
What is Genetic variations?
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उत्तर
Genetic variation is the difference in DNA sequences between individuals within a population. Variation occurs in germ cells, i.e., sperm and egg, and also in somatic (all other) cells. Only variation that arises in germ cells can be inherited from one individual to another and so affect population dynamics, and ultimately evolution. Mutations and recombination are major sources of variation.
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संबंधित प्रश्न
Define the term gene flow.
Very short answer question.
If variation occurs in a population by chance alone and not by natural selection and brings a change in frequencies of an allele. What is it called?
Short answer question.
Enlist the different factors that are responsible for changing gene frequency.
Long answer question.
By taking industrial melanism as one example. Explain the concept of natural selection.
Write down the three main concepts of the modern synthetic theory.
Physical isolation is also called ______.
Identify the INCORRECT statement.
Ethological isolation is due to differences in ______
Write short note on Gene pool.
Match the following
| Column A | Column B | ||
| (i) | Dryopithecus | (a) | Java and Peking |
| (ii) | Ramapithecus | (b) | Toung in South Africa |
| (iii) | Australopithecus | (c) | Lake Victoria of Africa |
| (iv) | Homo erectus | (d) | Shivalik hills in India |
