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#31 | Concept of Speciation
(Zoology) > Evolution
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Related Practice Questions :
The occurrence of endemic species in South America and Australia is due to
| 1. | Extinction of these species from other regions |
| 2. | Continental separation |
| 3. | No terrestrial route to these places |
| 4. | Retrogressive evolution |
72%
From NCERT
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Most often the factor that initiates the speciation of two populations is:
| 1. | Geographic isolation |
| 2. | Inability of the gametes to fuse |
| 3. | Different courtship behaviours |
| 4. | Different copulatory organs |
82%
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Reproduction isolation in sympatric speciation develops without a
| 1. | Geographic barrier |
| 2. | Barrier to gene flow |
| 3. | Change in chromosome number |
| 4. | Barrier to mating |
57%
AIIMS - 2016
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Speciation of sympatric species is due to
| 1. | geographic isolation |
| 2. | reproductive isolation |
| 3. | isolation/separation |
| 4. | migration |
59%
AIIMS - 2013
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One of the important consequences of geographical isolation is:
1. no change in the isolated fauna
2. preventing speciation
3. speciation through reproductive isolation
4. random creation of new species
65%
AIPMT - 2007
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