Practice Linkage and Recombination - 4.3.3 | 4. Principles of Inheritance and Variation | CBSE Grade-12 Biology
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4.3.3 - Linkage and Recombination

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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define linkage in the context of genetics.

💡 Hint: Think about how genes might travel together during meiosis.

Question 2

Easy

What is recombination?

💡 Hint: Consider what happens during crossing over in meiosis.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is linkage?

  • A process of genetic recombination
  • The tendency of genes to be inherited independently
  • The tendency of genes on the same chromosome to be inherited together

💡 Hint: Think about how genes are positioned on chromosomes.

Question 2

Recombination leads to:

  • True
  • False

💡 Hint: Reflect on the role of meiosis in creating genetic diversity.

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Challenge Problems

Push your limits with challenges.

Question 1

A researcher is analyzing a dihybrid cross of two traits in Drosophila: body color (brown = dominant over yellow) and wing shape (normal = dominant over vestigial). If the genes are linked, how would the expected phenotypic ratios differ from that of Mendelian inheritance?

💡 Hint: Think about what Mendelian ratios would be if genes were independent.

Question 2

Consider a plant species with tightly linked flower color genes (red and white). If a cross yields predominantly red flowers, but a few white flowers appear, how might this indicate linkage, and what might it suggest about the distance between these genes?

💡 Hint: Evaluate how linkage distances impact gene expression patterns.

Challenge and get performance evaluation