Epigenetics: Nature vs. Nurture

Epigenetics are heritable changes that occur without changes to the DNA sequence. Understanding it can help shed light on the Nature vs. Nurture debate. 00:00-00:21 Introduction 00:21-00:33 Traditional View of Genetics 00:34-1:28 Experiences Can Manipulate Gene Expression 1:29-2:15 Review of Gene Expression 2:16-3:02 Mechanisms of Epigenetics: DNA Methylation 3:03-4:12 Mechanisms of Epigenetics: Histone Modification 4:12-4:55 Epigenetics Examples: Agouti Mice & Obesity 4:55-6:09 Epigenetics Examples: Stress Response in Rats 6:09-6:33 Summary Certain environmental conditions can change whether genes are activated or inactivated. These conditions can include drugs, chemicals and nutrition. Exposure can change the level of methylation, changing whether RNA polymerase can attach to the DNA molecule. The behavior of the histones can also be changed; the tightness of the DNA wrapping makes the genetic material either easier or more difficult to access, thereby changing the ease with which it is used. Check it out! Avoid plagiarism! Cite BOGObiology! [BOGObiology]. (2017, October 11). Epigenetics: Nature vs. Nurture. [Video File]. Retrieved from /watch/ocIDH6PMB8QMD #genetics #epigenetics #naturevsnurture

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