S phase

American  

noun

Cell Biology.

1. the period of the cell cycle prior to mitosis, during which the chromosomes are replicated.

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Etymology

Origin of S phase

First recorded in 1940–45

Example Sentences

One of the critical processes monitored by the cell cycle checkpoint surveillance mechanism is the proper replication of DNA during the S phase.

From Textbooks • Jun. 9, 2022

The human genome has three billion base pairs per haploid set of chromosomes, and 6 billion base pairs are replicated during the S phase of the cell cycle.

From Textbooks • Jun. 9, 2022

During DNA duplication in the S phase, each chromosome is replicated to produce two identical copies, called sister chromatids, that are held together at the centromere by cohesin proteins.

From Textbooks • Jun. 9, 2022

The replication of DNA occurs during the synthesis phase, or S phase, of the cell cycle, before the cell enters mitosis or meiosis.

From Textbooks • Apr. 25, 2013

A cell that does not meet all the requirements will not be released into the S phase.

From Textbooks • Apr. 25, 2013