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प्रश्न
Overproduction is the principle of
(A) Lamarckism
(B) Theory of organic evolution
(C) Panspermia theory
(D) Modern theory of evolution
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उत्तर
(B) Theory of organic evolution
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संबंधित प्रश्न
According to Abiogenesis, life originated from
(1) Non-living matter
(2) Pre-existing life
(3) Oxygen
(4) Extra-terrestrial matter
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?
What is Isolation?
The change in gene and gene frequencies caused due to various aspects like mutation recombination and migration is called ______.
Identify the method of reproductive isolation, when members of a population attain sexual maturity at different times preventing interbreeding.
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.
Fertilization between opposite mating gametes leads to ______.
Sewall Wright effect is ______
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.
