The nucleotide sequences of two DNA molecules from a population of T2 DNA molecu
ID: 14144 • Letter: T
Question
The nucleotide sequences of two DNA molecules from a population of T2 DNAmolecules are shown below:
(1) 5’-TAGCTCC-3’ (3) 5’-GCTCCTA-3’
(2) 3’-ATCGAGG-5’ (4) 3’-CGAGGAT-5’
These molecules were heat-denatured. Then the separated strands were
allowed to renature. Diagram the structures, including strand numbers,
sequences, and polarity (e.g. 5’ – 3’), of the renatured molecules most likely to
appear when
A. strand 1 renatures with strand 2
B. strand 3 renatures with strand 4
C. strand 2 renatures with strand 3
Explanation / Answer
The nucleotide sequences of two DNA molecules from a population of T2 DNA
molecules are shown below:
(1) 5’-TAGCTCC-3’ (3) 5’-GCTCCTA-3’
(2) 3’-ATCGAGG-5’ (4) 3’-CGAGGAT-5’
These molecules were heat-denatured. Then the separated strands were
allowed to renature. Diagram the structures, including strand numbers,
sequences, and polarity (e.g. 5’ – 3’), of the renatured molecules most likely to
appear when
A. strand 1 renatures with strand 2
strand 1 : 5’-TAGCTCC-3’
strand 2 : 3’-ATCGAGG-5’
B. strand 3 renatures with strand 4
strand 3 : 5’-GCTCCTA-3’
strand 4 : 3’-CGAGGAT-5’
C. strand 2 renatures with strand 3
strand 3 : 5’-GCTCCTA-3’
strand 2 : 3’-ATCGAGG-5’
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