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प्रश्न
What is hybrid sterility?
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उत्तर
Hybrids develop to maturity but become sterile due to failure of proper gametogenesis (meiosis). This is called hybrid sterility. e.g. Mule is an inter-generic hybrid that is sterile.
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संबंधित प्रश्न
What is ‘gene flow’?
The proportion of an allele in the gene pool to the total number of alleles at a given locus is called _______.
Write down the three main concepts of the modern synthetic theory.
Which of the following is the CORRECT difference between genetic drift and natural selection?
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 |
Which of the following phenomena results in genetic recombination?
Natural selection of black winged moth (Biston carbonaria) over white winged moth (Biston betularia) occurred due to ____________.
Industrial melanism is one of the best example for ______.
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 |
Which of the following is a pre-mating mechanism of isolation?
