Listen to the sound clip "The DNA molecule is like a twisted ladder, and the ladder's rungs are made up of pairs of bases. When a cell divides, the DNA molecule unwinds and each strand serves as a template for a new stra from Professor Utonium (Tom Kane) TTS Computer AI Voice:
"The DNA molecule is like a twisted ladder, and the ladder's rungs are made up of pairs of bases. When a cell divides, the DNA molecule unwinds and each strand serves as a template for a new stra
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