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प्रश्न
Why only left ovary and oviduct arc present in birds?
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उत्तर १
Only left ovary and oviduct are present in birds to reduce body weight and is an adaptation for flying.
उत्तर २
Only left ovary and oviduct are present in birds to reduce body weight and is an adaptation for flying.
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संबंधित प्रश्न
What is ‘gene flow’?
Long answer question.
Describe the different types of reproductive isolations.
The change in gene and gene frequencies caused due to various aspects like mutation recombination and migration is called ______.
Which is TRUE for industrial melanism?
After the industrial revolution in Great Britain in 1845 which of the following occurred?
Physical isolation is also called ______.
Which statements are TRUE regarding genetic recombination?
- It occurs in asexually and sexually reproducing organisms.
- They occur due to random union of gametes, anaphasic separation of chromosomes, and crossing over.
- New genetic combinations result in variation.
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 |
Define the term Chromosomal aberrations.
If the members of two different populations do not interbreed due to difference in the structure of reproductive organs, then it is called ______ isolation.
