When a cell or a whole organism reproduces, a complete set of genetic instructions must pass from one generation to the next. “The two strands of the original DNA molecule serve as templates for new strands. DNA replication result in two daughter molecules, each consisting of one old strand and one new strand. The parental DNA untwisted as its strands separate, and the daughter DAN rewinds as it forms.” (Essential biology and physiology, chapter 10, P.179). This whole process called DNA replication. There is flow of genetic information from DNA to RNA to protein, which is divided in two stages, transcription and translation. A sequence of nucleotides in the DNA is... [continues]
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