Chapter 8: Genetics and Evolution – The Role of Genetic Changes in Evolution The theory of evolution does not solely rely on external factors such as fossil records, morphological similarities, and natural selection. It is also closely linked to changes in the genetic structures of living organisms. Genetics forms the cornerstone of evolutionary changes, and even before Darwin's theory of natural selection, the foundations of genetic science were laid in the late 19th century. However, to understand how genetic science integrates with the theory of evolution, it is essential to know how these two fields complement each other. Genetics: The Cornerstone of Evolutionary Changes Genetics is the branch of science that studies the hereditary units carrying biological traits in living organisms. An organism's genetic structure determines its traits. Genetic material is encoded in DNA and RNA molecules, and this genetic information is passed on from generation to gene...
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