Schéma de la Réplication de l'ADN

The diagram illustrates the detailed process of DNA replication, showing how a parent DNA molecule is copied to produce two identical daughter molecules. The processus de réplication begins at what's known as the œil de réplication (replication eye), where the DNA double helix begins to unwind.

Definition: The replication eye is the point where the DNA double helix separates, creating a bubble-like structure where replication begins.

Vocabulary: ADN polymérase is the enzyme responsible for synthesizing new DNA strands by adding complementary nucleotides to the template strands.

Example: When a G (Guanine) is present on the template strand, a C (Cytosine) is added to the new strand, following the base-pairing rules.

Highlight: The replication process occurs simultaneously in both directions from the replication origin, with two fourches de réplication (replication forks) moving in opposite directions.

Quote: "sens de l'ouverture de la molécule d'ADN" indicates the direction in which the DNA molecule opens during replication.

The diagram clearly shows both the old (ancien) and new (nouveau) strands, with the molécule d'ADN being replicated in a semi-conservative manner, ensuring genetic information is accurately preserved and transmitted.