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प्रश्न
Industrial melanism is one of the best example for ______.
विकल्प
speciation
natural selection
reproductive isolation
mutation
geographical isolation
adaptive radiation
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उत्तर
Industrial melanism is one of the best example of natural selection.
Explanation:
It demonstrates how environmental changes favor certain traits in organisms. During industrialization, dark-colored moths had a survival advantage over light-colored moths due to better camouflage against pollution-darkened tree trunks. This led to an increase in their population, showing natural selection in action.
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संबंधित प्रश्न
Give any ‘two’ factors responsible for genetic variation.
How would the gene flow or genetic drift affect the population in which either of them happens to take place?
What is Genetic variations?
Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.
All are post zygotic barriers, EXCEPT
Which theory provides explanation for both natural selection as well as mutation?
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 |
Sewall Wright effect is ______
What is reproductive isolation?
If the members of two different populations do not interbreed due to difference in the structure of reproductive organs, then it is called ______ isolation.
