Ideas about the components of cells have been affected by new technologies. Four technologies are listed below. Which one enabled researchers to understand the basis of the other three?

DNA sequencing reveals the order of bases in DNA, helping researchers identify genes and determine how they encode proteins and other cell components. This understanding provides a basis for interpreting amino-acid sequences, blood-type inheritance, and genetic relationships tested through paternity analysis. Therefore, DNA sequencing is the technology that underlies the other three.

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