What is the Y-shaped region where new DNA strands are growing during replication?

Study for the DNA Structure, Replication, Transcription and Translation Test with flashcards and multiple choice questions. Each question offers hints and explanations. Prepare thoroughly and excel in your exam!

Multiple Choice

What is the Y-shaped region where new DNA strands are growing during replication?

Explanation:
During DNA replication, the Y-shaped region where new DNA strands grow is called the replication fork. Helices unwinds the double helix here, creating two template strands and allowing DNA polymerases to add nucleotides to the growing 3' ends. One new strand is made continuously toward the fork (leading strand), while the other is made in short fragments away from the fork (Okazaki fragments) and later joined. This fork region is the site of ongoing synthesis as replication progresses. Other terms refer to different concepts: a mutation is a change in DNA sequence; polynucleotides are long DNA or RNA polymers; transcription is RNA synthesis from a DNA template.

During DNA replication, the Y-shaped region where new DNA strands grow is called the replication fork. Helices unwinds the double helix here, creating two template strands and allowing DNA polymerases to add nucleotides to the growing 3' ends. One new strand is made continuously toward the fork (leading strand), while the other is made in short fragments away from the fork (Okazaki fragments) and later joined. This fork region is the site of ongoing synthesis as replication progresses. Other terms refer to different concepts: a mutation is a change in DNA sequence; polynucleotides are long DNA or RNA polymers; transcription is RNA synthesis from a DNA template.

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