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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.
Give the graphical representation of Hardy· Weinberg's principle in the form of Punnet Square.
State Hardy-Weinberg’s principle.
Differentiate between Directional natural selection and Disruptive natural selection.
What is the Founder's effect?
According to the Hardy-Weinberg principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?
How does the Hardy-Wienberg equation explain genetic equilibrium?
Multiple choice question.
In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:
In the Hardy-Weinberg equilibrium equation, the homozygous mutant is represented as ______.
Hardy - Weinberg equilibrium is known to be affected by gene - flow, genetic drift, mutation, genetic recombination and
Disturbance of Hardy - Weinberg equilibrium results in
Enumerate three most characteristic criteria for designating a Mendelian population.
How is Hardy-Weinberg’s expression “(p2 + 2pq + q2) = 1” derived?
The graphs below show three types of natural selection. The shaded areas marked with arrows show the individuals in the population who are not selected. The dotted vertical lines show the statistical means.
 |
 |
 |
| character Graph A |
character Graph B |
character Graph C |
- What names are given to the types of selection shown in graphs A, B and C?
- After the selection has operated for several generations in the above populations indicated as, Graph A, B and C, graphically illustrate the probable results.
State 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).
What is the primary statement of Hardy-Weinberg's principle?
What does the Hardy-Weinberg equation \[p^2 + 2pq + q^2 = 1\] represent?
Where do a large proportion of recessive alleles exist in a population at Hardy-Weinberg equilibrium?
What evolutionary phenomenon occurs when a small portion of a population migrates to a new location and becomes founders of a distinct population?
What is the role of natural selection in affecting Hardy-Weinberg equilibrium?
What does genetic drift cause in a population, particularly in new samples of a population?
How does gene migration or gene flow affect allele frequencies?
What biological significance does the heterozygous genotype hold in populations at Hardy-Weinberg equilibrium?
