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Question

Scientists have long theorized about the origins of the DNA molecule. One of the theories is that it originated from a molecule whose building block is the same as the building block of DNA. They think this origin of DNA is from a molecule called
Lipid
RNA
Carbohydrate
Protein

Answer 1

The correct answer is RNA.

The RNA world hypothesis suggests that RNA molecules were precursors to current life and that DNA evolved from RNA as a more stable storage form of genetic information. This idea posits that RNA could both store genetic information and catalyze chemical reactions, playing a crucial role in the origins of life and the development of DNA.