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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?

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प्रश्न

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?

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उत्तर

Among the five factors that are known to affect Hardy Weinberg equilibrium, three factors are gene flow, genetic drift, genetic recombination, Mutation, and Natural Selection are the other two factors.

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अध्याय 7: Evolution - VERY SHORT ANSWER [पृष्ठ ४९]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 7 Evolution
VERY SHORT ANSWER | Q 11. | पृष्ठ ४९

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संबंधित प्रश्न

State Hardy-Weinberg’s principle.


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?


Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.


In a population, Hardy Weinberg equilibrium is disturbed by following factors EXCEPT ______.


In the Hardy-Weinberg equilibrium equation, the homozygous mutant is represented as ______.


(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______. 


Hardy Weinberg's principle explains ______


Hardy - Weinberg equilibrium is known to be affected by gene - flow, genetic drift, mutation, genetic recombination and


Disturbance of Hardy - Weinberg equilibrium results in


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?


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.


“Migration may enhance or blurr the effects of selection”. Comment.


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?


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?


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
  1. What names are given to the types of selection shown in graphs A, B and C?
  2. After the selection has operated for several generations in the above populations indicated as, Graph A, B and C, graphically illustrate the probable results.

Give a mathematical expression for Hardy Weinberg's principle.


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.


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