Gene flow occurs through generations. Ge | Class 12 Biology Chapter Evolution, Evolution NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 6 in the current curriculum.

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 8:

Gene flow occurs through generations. Gene flow 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.

. 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.

Question 8:

Gene flow occurs through generations. Gene flow 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.

Answer:

Yes, I agree that gene flow occurs through generations. The human migratory patterns can be predicted by studying the allelic frequencies in prehistory and history. We can trace the evolutionary history and migratory patterns by the Human Genographics project. This project is a genetic anthropological study that was launched on April 13, 2005 by the National Geographic Society which aims to map history of human migration patterns by collecting and analysing DNA samples.

Note*: Shared gene pools gives the species its own identity. Reduced gene flow play important role in the speciation. Various modes have been presented whereby a single evolutionary descendent splits into two or more genetically independent lineages due to reduced gene flow.     


Study Tips for Answering NCERT Questions:

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:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Evolution.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Welcome 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 8: Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we ....

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