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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
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?
Multiple choice question.
In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:
Very short answer question.
State the Hardy – Weinberg equilibrium.
How does Hardy-Weinberg’s expression (p2+2pq+q2=1) explain that genetic equilibrium is maintained in a population? List any four factors that can disturb the genetic equilibrium.
Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.
In a population, Hardy Weinberg equilibrium is disturbed by following factors EXCEPT ______.
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______.
Disturbance of Hardy - Weinberg equilibrium results in
Which type of selection explains industrial melanism observed in moth, Biston bitularia?
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?
Gene flow occurs through generations. and can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide explanation to your answer.
Enumerate three most characteristic criteria for designating a Mendelian population.
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?
Explain Hardy-Weinberg's principle
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:
The number of homozygous recessive 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 is the primary statement of Hardy-Weinberg's principle?
What does the Hardy-Weinberg equation \[p^2 + 2pq + q^2 = 1\] represent?
What evolutionary phenomenon occurs when a small portion of a population migrates to a new location and becomes founders of a distinct population?
What biological significance does the heterozygous genotype hold in populations at Hardy-Weinberg equilibrium?
