In this lecture series, we will explore the various sources of DNA damage and how cells repair such damage. This video serves as the first part of a two-part series, covering types of damage including chemical and radiation-induced mutations, errors during cellular replication, and environmental stressors. Mechanisms of repair such as base excision repair, single and double-strand break repair, and damage repair by alternative systems like bypass and homologous recombination will be analyzed. This series aims to provide a comprehensive understanding of how cells maintain DNA stability, offering deeper insights into the fundamentals of molecular biology and advanced medical research.

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