What is founder effect? | 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 12:

What is founder effect?

. 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 12:

What is founder effect?

Answer:

There are two forms of genetic drift and founder effect is one of them. Founder effect occurs when the small group of individuals (called founder’s population) become isolated from the large population to form a colony. Population in the new settlement like; Larger the founder population the more likely it will resemble the parent population. The smaller number of the individuals as founders might not possess all the alleles and might display different frequency. Formation of different genotype in the new settlement is called the founders effect.

Note*: The founding individuals may not represent the entire genetic diversity of the original population, i.e. the alleles in the founder population will be present at the different frequencies and some may be missing altogether.

founder effect 

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 12: What is founder effect?....

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