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प्रश्न
What is ‘gene flow’?
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उत्तर
Gene flow is the introduction of genetic material from one population of its species to another by interbreeding. It brings a change in the composition of the gene pool of the receiving population. The introduction of new alleles through a gene pool for increased variability within the population.
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संबंधित प्रश्न
Give any ‘two’ factors responsible for genetic variation.
The proportion of an allele in the gene pool to the total number of alleles at a given locus is called _______.
Any random fluctuation in allele frequency, occurring in the natural population by pure chance 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 zygote mortality?
Physical isolation is also called ______.
Natural selection of black winged moth (Biston carbonaria) over white winged moth (Biston betularia) occurred due to ____________.
Define the term:
Genetic drift
Define the Transformation.
Define the term Chromosomal aberrations.
