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Dideoxy NTPs (ddNTPs) are used in sequencing reaction to terminate DNA polymerization reaction at various chain lengths. Whic

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Ans: Deoxyribose sugars differ from ribose sugars because they lack an oxygen atom at 2' position, at 2' position -OH group is deoxidized to -H. Additionally another -OH group present at 3' carbon position is again deoxidized to -H in dideoxy NTPs . So, option-3 is the correct alternative. CH2O4 OH s CH₂OH он V3! OH OH OH Ribose Deoxyribose (Missing oxygen atom at 2-position) s CH201 o OH H H Dideoxy wibose oxy

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