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प्रश्न
“Migration may enhance or blurr the effects of selection”. Comment.
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उत्तर
Migration may cause enrichment of the gene pool of such alleles that are being selected for, or nullify the effects of selection through replenishment of alleles that were selected against by nature.
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संबंधित प्रश्न
What does the following equation represent? Explain:
p2 + 2pq + q2 = 1.
Differentiate between Directional natural selection and Disruptive natural selection.
What is the Founder's effect?
How does the Hardy-Wienberg equation explain genetic equilibrium?
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______.
Hardy - Weinberg equilibrium is known to be affected by gene - flow, genetic drift, mutation, genetic recombination and
The factor that leads to the Founder effect in a population is ______
For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be ______.
Which type of selection explains industrial melanism observed in moth, Biston bitularia?
In a certain population, the frequency of three genotypes is as follows:
| Genotypes: | BB | Bb | bb |
| frequency: | 22% | 62% | 16% |
What is the likely frequency of B and b alleles?
Among the five factors that are known to affect Hardy-Weinberg equilibrium, three factors are gene flow, genetic drift and genetic recombination. What are the other two factors?
Name the law that states that the sum of allelic frequencies in a population remains constant. What are the five factors that influence these values?
How is Hardy-Weinberg’s expression “(p2 + 2pq + q2) = 1” derived?
List any two factors that can disturb the genetic equilibrium.
At a particular locus, the frequency of allele A is 0.8, and that of allele a is 0.2. What would be the frequency of heterozygotes in a random mating population at equilibrium?
Write Hardy Weinberg's equation.
Give a mathematical expression for Hardy Weinberg's principle.
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
Frequency of the allele (A).
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
The number of homozygous recessive fruit flies.
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
The number of carrier fruit flies.
The black colour on the beak of finches dominates over the yellow colour. There are 210 individuals with the genotype DD, 245 individuals with the genotype Dd and 45 individuals with the genotype dd. Deduce the frequency of individuals with dominant, heterozygous, and recessive traits.
What term describes the total collection of all genes and their alleles in a population?
What is the bottleneck effect in population genetics?
What does genetic drift cause in a population, particularly in new samples of a population?
Why are alleles present in homozygous recessive organisms exposed to environmental selection?
What does it indicate when the measured frequency of an allele differs from the expected Hardy-Weinberg value?
Which condition for Hardy-Weinberg equilibrium specifically eliminates random fluctuations in allele frequency?
