Welcome to the NCERT Solutions for Class 12 Biology - Chapter Evolution. This page offers a step-by-step solution to the specific question from Exercise 0, Question 12: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.
"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.
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Stay updated with our latest educational content and study tips
Interest is one of the most significant ideas in maths and financial calculations. It is very common in banking, loan applications, investments, saving account and competitive exams. Simple Interest and Compound Interest make it easier to find out how much more is earned and/or paid on a principal during the period of time. These Interest … Read more
Read MoreIn 2026, students, professionals, and job seekers must have a high level of spoken English. Spoken English is a beginner level course to enhance learners’ communication skills in English, their pronunciation, vocabulary, grammar structure and confidence in speaking English fluently. Today, the emphasis of spoken English courses is placed on actual conversations, everyday speech practice … Read more
Read MoreArtificial Intelligence (AI) and Machine Learning (ML) are two of the most sought-after technologies in today’s digital era. Although these terms are often used together, they are not the same. Machine Learning is, in fact, a component of Artificial Intelligence that enables systems to learn and enhance on their own, without direct programming. AI is … Read more
Read MoreTime, Speed, and Distance are some of the most important concepts in mathematics and aptitude. These are the concepts which are used to calculate the speed of an object, time taken for an object to move and the distance traveled during the motion. Questions from this topic are frequently seen in School Tests, Competitive Tests, … Read more
Read MoreWelcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 12: "Migration may enhance or blurr the effects of selection". Comment.....
Add Comment