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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.
APPEARS IN
संबंधित प्रश्न
State the following:
Theory of recapitulation
Short answer question.
Enlist the different factors that are responsible for changing gene frequency.
What is Genetic variations?
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 |
Identify the INCORRECT statement.
The change in gene and gene frequencies caused due to various aspects like mutation recombination and migration is called ______.
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 ____________.
Reproductive isolation does not occur due to ______.
Domestic wheat, which has 42 chromosomes, is probably hexaploid (6n), whereas the haploid number in the ancestral ones was 7. Find out the right reason as to how are such plants produced?
