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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
Give any ‘two’ factors responsible for genetic variation.
What is ‘gene flow’?
How would the gene flow or genetic drift affect the population in which either of them happens to take place?
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?
Long answer question.
By taking industrial melanism as one example. Explain the concept of natural selection.
The total genetic information encoded in sum total of genes in a Mendelian population is called ______.
Match the columns and choose the correct option.
| Column I | Column II | ||
| i. | Ecological isolation | a. | Sexually mature at different times of the year |
| ii. | Ethological isolation | b. | Specific mating behaviours |
| iii. | Mechanical isolation | c. | Difference in structure of mating organs |
| iv. | Seasonal isolation | d. | Same geographic region but separate habitat |
Which of the following is TRUE for genetic drift?
The structural, morphological change chromosome due to rearrangement is called ____________.
Reproductive isolation does not occur due to ______.
