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Genetic Drift - bottleneck and founder effect

This lecture explains about the genetic drift and the example of genetic drift events such as the bottleneck effect and the founder effect that explains the change in the genetic frequency with time by random chance. Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. These variations in the presence of alleles are measured as changes in allele frequencies. For more information, log on to- http://www.shomusbiology.com/ Get Shomu's Biology DVD set here- http://www.shomusbiology.com/dvd-store/ Download the study materials here- http://shomusbiology.com/bio-material... Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Facebook page-   / shomusbiology   Twitter -   / shomusbiology   SlideShare- www.slideshare.net/shomusbiology Google plus- https://plus.google.com/1136485849827... LinkedIn -   / suman-bhattacharjee-2a051661   Youtube-    / thefunsuman   Thank you for watching