Chapter 4: Heredity and Evolution

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Heredity and Evolution


What evidence do we have for the origin of life from inanimate matter?


Miller-Urey experiment provides evidence of life. They took a mixture of gases like ammonia, hydrogen, methane and water vapour and sparked the mixtures at temperatures just below 100โ„ƒ for a week. After that, they analysed the mixture and found organic molecules like amino acids are formed from inorganic molecules. Proteins are the building block of life and amino acids are the precursors of the proteins. 

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