Explain how studying the dna of different types of organisms provides evidence that all life on earth is related.

 

Question: Explain how studying the dna of different types of organisms provides evidence that all life on earth is related. 

Studying the DNA of different types of organisms provides evidence that all life on earth is related because different species contain DNA sequences that are extremely similar. For example, humans share around 98 percent of their DNA sequence with chimpanzees and gorillas and up to 50 percent of their DNA with some plants and fungi. This indicates that all life on Earth share a common ancestor, suggesting that all life is related in some way. In addition, scientists have discovered that the DNA sequences of all living things contain the same four base pairs, known as A, T, C and G, and that the same genetic code is used to create proteins, which are essential for life. This further supports the notion that all life is related.

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