"Migration may enhance or blurr the | Class 12 Biology Chapter Evolution, Evolution NCERT Solutions

Q12.

"Migration may enhance or blurr the effects of selection". Comment.

Migration is the movement of organisms among the subpopulations and this includes both immigration and emigration. Migration results in homogenization of allele frequencies among all the population in the absence of selection process. It enhances the gene pool of those alleles which have been selected and blur the effects of selection through the replenishment of alleles that were selected against by the nature.

The selection can amplify the effects of migration. If the selection is stronger than migration, then the differences among the population will be maintained. And, if the migration is stronger than selection then the differences among the population will be reduced. The diversity among the population of intermediate age reduces as the results of migration.

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Important Questions & Answers

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This question is important because it tests key concepts from the NCERT syllabus and is frequently asked in CBSE exams.

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This question is based on core NCERT concepts explained in the chapter and should be revised thoroughly before exams.

What is the correct answer to: "Migration may enhance or blurr the effects of selection". Comment.?

Migration is the movement of organisms among the subpopulations and this includes both immigration and emigration. Migration results in homogenization of allele frequencies among all the population in the absence of sele...

How do you solve "Migration may enhance or blurr the effects of selection". Comment. step by step?

Step-by-step explanation:
• Migration is the movement of organisms among the subpopulations and this includes both immigration and emigration
• Migration results in homogenization of allele frequencies among all the population in the absence of selection process
• It enhances the gene pool of those alleles which have been selected and blur the effects of selection through the replenishment of alleles that were selected against by the nature

What common mistakes should be avoided in this question?

Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.

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