Sign Up

Have an account? Sign In Now

Sign In

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask a question.

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

Abstract Classes

Abstract Classes Logo Abstract Classes Logo
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Polls
  • Add group
  • Buy Points
  • Questions
  • Pending questions
  • Notifications
    • sonali10 has voted up your question.September 24, 2024 at 2:47 pm
    • Abstract Classes has answered your question.September 20, 2024 at 2:13 pm
    • The administrator approved your question.September 20, 2024 at 2:11 pm
    • banu has voted up your question.August 20, 2024 at 3:29 pm
    • banu has voted down your question.August 20, 2024 at 3:29 pm
    • Show all notifications.
  • Messages
  • User Questions
  • Asked Questions
  • Answers
  • Best Answers
Home/ Questions/Q 47085
Next
In Process
Ramakant Sharma
Ramakant SharmaInk Innovator
Asked: April 24, 20242024-04-24T11:00:11+05:30 2024-04-24T11:00:11+05:30In: Anthropology

Discuss the concept of ‘Genetic Drift’ with suitable diagrams.

Explain “Genetic Drift” with appropriate illustrations.

BANC 107IGNOU
  • 0
  • 11
  • 26
  • 0
  • 0
Share
  • Facebook

    1 Answer

    • Voted
    • Oldest
    • Recent
    1. Ramakant Sharma Ink Innovator
      2024-04-24T11:01:04+05:30Added an answer on April 24, 2024 at 11:01 am

      1. Introduction to Genetic Drift

      Genetic drift is a mechanism of evolutionary change that occurs due to random fluctuations in allele frequencies within populations. Unlike natural selection, which operates based on the differential survival and reproduction of individuals with advantageous traits, genetic drift is a stochastic process driven by chance events, particularly in small populations. Genetic drift can lead to changes in allele frequencies over time, resulting in genetic divergence and loss of genetic diversity within populations.

      2. Founder Effect

      The founder effect is a specific type of genetic drift that occurs when a small group of individuals migrates or colonizes a new habitat, establishing a new population with a limited genetic pool. As a result, the genetic composition of the founder population may differ from the original population, leading to reduced genetic diversity and increased frequency of certain alleles. The founder effect can have significant consequences for population genetics, as rare alleles may become more common, while others may be lost entirely due to genetic drift.

      3. Bottleneck Effect

      The bottleneck effect occurs when a population undergoes a drastic reduction in size due to environmental disasters, habitat fragmentation, or human activities such as hunting or habitat destruction. As a result of the population bottleneck, genetic diversity is dramatically reduced, and allele frequencies may change randomly due to genetic drift. In small bottlenecked populations, rare alleles may be lost, and genetic variation may become more homogenous, increasing the risk of inbreeding and genetic disorders.

      4. Illustrative Diagrams

      Founder Effect Diagram

      The founder effect diagram illustrates how a small group of individuals migrates to a new habitat and establishes a founder population. Initially, the founder population has a subset of alleles present in the original population. However, due to the limited number of individuals and chance events, certain alleles may become more frequent or fixed in the founder population, leading to genetic divergence from the original population.

      Bottleneck Effect Diagram

      The bottleneck effect diagram demonstrates how a population undergoes a drastic reduction in size, resulting in a bottlenecked population with reduced genetic diversity. Initially, the population has a wide range of alleles, but after the bottleneck event, genetic diversity is significantly reduced, and certain alleles may be lost entirely due to genetic drift. The bottlenecked population may exhibit higher frequencies of certain alleles due to chance events during the bottleneck event.

      5. Importance of Genetic Drift

      Genetic drift is an important evolutionary mechanism that can have profound effects on population genetics, species diversity, and conservation biology. In small populations, genetic drift can lead to random fluctuations in allele frequencies, increasing the risk of inbreeding, genetic disorders, and loss of genetic diversity. Understanding the role of genetic drift is crucial for conservation efforts, as small and isolated populations are particularly vulnerable to the effects of genetic drift and require targeted management strategies to maintain genetic diversity and population viability.

      Conclusion

      Genetic drift is a fundamental mechanism of evolutionary change that occurs due to random fluctuations in allele frequencies within populations. The founder effect and bottleneck effect are two examples of genetic drift that can lead to changes in allele frequencies and loss of genetic diversity. By studying the processes of genetic drift and their consequences, scientists gain insights into the dynamics of population genetics, species diversity, and evolutionary biology, informing conservation and management practices to preserve genetic diversity and ensure the long-term viability of populations and species.

      • 0
      • Share
        Share
        • Share onFacebook
        • Share on Twitter
        • Share on LinkedIn
        • Share on WhatsApp

    Related Questions

    • Explain the changing nature of Tourism and how applied anthropologists can contribute towards this.
    • What are the factors that can help in developing sustainable tourism practices?
    • List some of the terminologies that are used in describing tourism today.
    • Briefly state the aspects that sustainable tourism and its development and planning should take into account.
    • State how the development of information technology affected the tourism industry?
    • Outline the face of contemporary tourism in today’s globalised world.
    • Give the meaning of the term ‘local’ as discussed in the study of tourism.
    • Which national park in Assam is a part of the World Heritage Sites?

    Sidebar

    Ask A Question

    Stats

    • Questions 21k
    • Answers 21k
    • Popular
    • Tags
    • Pushkar Kumar

      Bachelor of Science (Honours) Anthropology (BSCANH) | IGNOU

      • 0 Comments
    • Pushkar Kumar

      Bachelor of Arts (BAM) | IGNOU

      • 0 Comments
    • Pushkar Kumar

      Bachelor of Science (BSCM) | IGNOU

      • 0 Comments
    • Pushkar Kumar

      Bachelor of Arts(Economics) (BAFEC) | IGNOU

      • 0 Comments
    • Pushkar Kumar

      Bachelor of Arts(English) (BAFEG) | IGNOU

      • 0 Comments
    Academic Writing Academic Writing Help BEGS-183 BEGS-183 Solved Assignment Critical Reading Critical Reading Techniques Family & Lineage Generational Conflict Historical Fiction Hybridity & Culture IGNOU Solved Assignments IGNOU Study Guides IGNOU Writing and Study Skills Loss & Displacement Magical Realism Narrative Experimentation Nationalism & Memory Partition Trauma Postcolonial Identity Research Methods Research Skills Study Skills Writing Skills

    Users

    Arindom Roy

    Arindom Roy

    • 102 Questions
    • 104 Answers
    Manish Kumar

    Manish Kumar

    • 49 Questions
    • 48 Answers
    Pushkar Kumar

    Pushkar Kumar

    • 57 Questions
    • 56 Answers
    Gaurav

    Gaurav

    • 535 Questions
    • 534 Answers
    Bhulu Aich

    Bhulu Aich

    • 2 Questions
    • 0 Answers
    Exclusive Author
    Ramakant Sharma

    Ramakant Sharma

    • 8k Questions
    • 7k Answers
    Ink Innovator
    Himanshu Kulshreshtha

    Himanshu Kulshreshtha

    • 10k Questions
    • 11k Answers
    Elite Author
    N.K. Sharma

    N.K. Sharma

    • 930 Questions
    • 2 Answers

    Explore

    • Home
    • Polls
    • Add group
    • Buy Points
    • Questions
    • Pending questions
    • Notifications
      • sonali10 has voted up your question.September 24, 2024 at 2:47 pm
      • Abstract Classes has answered your question.September 20, 2024 at 2:13 pm
      • The administrator approved your question.September 20, 2024 at 2:11 pm
      • banu has voted up your question.August 20, 2024 at 3:29 pm
      • banu has voted down your question.August 20, 2024 at 3:29 pm
      • Show all notifications.
    • Messages
    • User Questions
    • Asked Questions
    • Answers
    • Best Answers

    Footer

    Abstract Classes

    Abstract Classes

    Abstract Classes is a dynamic educational platform designed to foster a community of inquiry and learning. As a dedicated social questions & answers engine, we aim to establish a thriving network where students can connect with experts and peers to exchange knowledge, solve problems, and enhance their understanding on a wide range of subjects.

    About Us

    • Meet Our Team
    • Contact Us
    • About Us

    Legal Terms

    • Privacy Policy
    • Community Guidelines
    • Terms of Service
    • FAQ (Frequently Asked Questions)

    © Abstract Classes. All rights reserved.