IB Biology Topic D1.1.7 Differences Between Replication on the Leading Strand and the Lagging Strand Revision Notes (HL)

IB Biology Topic D1.1.7 Differences Between Replication on the Leading Strand and the Lagging Strand Revision Notes (HL) | RevisionDojo

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One Strand Copies Smoothly, the Other in Fragments

DNA polymerase can only add nucleotides in the 5′ to 3′ direction.
This creates two distinct processes: continuous replication on the leading strand and discontinuous replication on the lagging strand.

Note

The two DNA strands run in opposite directions, one in the 5′ to 3′ direction and the other in the 3′ to 5′ direction.

Continuous Replication on the Leading Strand

The leading strand is synthesized in the same direction as the replication fork moves.
Single primer initiation
1. DNA primase adds one RNA primer at the start of the strand.
Continuous synthesis

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One Strand Copies Smoothly, the Other in Fragments

DNA polymerase can only add nucleotides in the 5′ to 3′ direction.
This creates two distinct processes: continuous replication on the leading strand and discontinuous replication on the lagging strand.

Note

The two DNA strands run in opposite directions, one in the 5′ to 3′ direction and the other in the 3′ to 5′ direction.

Continuous Replication on the Leading Strand

The leading strand is synthesized in the same direction as the replication fork moves.
Single primer initiation
1. DNA primase adds one RNA primer at the start of the strand.
Continuous synthesis

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Note

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Excepteur sint occaecat cupidatat non proident

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Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D1.1.7: Differences Between Replication on the Leading Strand and the Lagging Strand Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

One Strand Copies Smoothly, the Other in Fragments

Continuous Replication on the Leading Strand

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One Strand Copies Smoothly, the Other in Fragments

Continuous Replication on the Leading Strand

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Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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