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प्रश्न
Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.
पर्याय
gene pool
gene mutation
genetic recombination
genetic drift
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उत्तर
Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called genetic drift.
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संबंधित प्रश्न
Why only left ovary and oviduct arc present in birds?
Match the following:
| Column- I | Column- II |
| 1. August Weismann | a. Mutation theory |
| 2. Hugo de vries | b. Germplasm theory |
| 3. Charl Darwin | c. Theory of acquired characters |
| 4. Lamark | d. Theory of natural selection |
Define the term ‘Mendelian population’.
What is hybrid sterility?
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?
Match the columns and choose the correct option.
| Column I | Column II | ||
| i. | Zygote mortality | a. | Hybrid develops to maturity but becomes sterile |
| ii. | Hybrid sterility | b. | Egg is fertilized but zygote dies |
| iii. | Gamete mortality | c. | Union of two gametes does not occur in the iven time |
Hybrids develop to maturity but become sterile due to failure of proper gametogenesis. This is a post mating barrier called ____________.
______ is the separation of the population of a particular species into smaller units which prevents interbreeding between them.
Define the term Chromosomal aberrations.
