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Multiple Choice
Which functional group is responsible for the formation of phosphodiester bonds in DNA, allowing a gene to bond to a plasmid?
A
Phosphate group
B
Carboxyl group
C
Amino group
D
Hydroxyl group
Verified step by step guidance
1
Understand the structure of DNA: DNA is composed of nucleotides, each containing a phosphate group, a sugar, and a nitrogenous base.
Identify the role of phosphodiester bonds: These bonds link the phosphate group of one nucleotide to the hydroxyl group of the sugar in another nucleotide, forming the backbone of DNA.
Recognize the functional group involved: The phosphate group is crucial in forming phosphodiester bonds, as it connects to the 3'-hydroxyl group of the sugar in the next nucleotide.
Consider the options given: Phosphate group, Carboxyl group, Amino group, Hydroxyl group. The phosphate group is directly involved in forming phosphodiester bonds.
Conclude the correct answer: The phosphate group is responsible for the formation of phosphodiester bonds in DNA, allowing a gene to bond to a plasmid.