First slide

Replication

Question

The polarity of the DNA strands from a to b and from c to d shown during replicating shown in the figure below would be:

Easy

A

a – b 3’ - 5’ c – d 5’ - 3’
B

a – b 3’ - 5’ c – d 3’ - 5’
C

a – b 5’ - 3’ c – d 3’ - 5’
D

a – b 5’ - 3’ c – d 5’ - 3’

Solution

The polarity of DNA template on which the leading strand is formed must be 3' — 5' and the other one on which the lagging strand with okazaki fragments are formed must be 5' ----- 3'.

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