Question about S phase in Interphase
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Question about S phase in Interphase

[From: ] [author: ] [Date: 11-10-10] [Hit: ]
Each chromosome contains of a single DNA molecule.2) In S phase, replication of DNA occurs.Each single DNA molecule is duplicated, and the two resulting DNA molecules are bound together near their center.After DNA replication,......
Is it true that in the S phase of Interphase the number of DNA molecules is doubled while the number of chromosomes remain constant?

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Yes, that is true.

Consider humans.

1) In G1 we have 46 chromosomes -- 23 from our mother and 23 from our father. Each chromosome contains of a single DNA molecule.

2) In S phase, replication of DNA occurs. Each single DNA molecule is duplicated, and the two resulting DNA molecules are bound together near their center. After DNA replication, the we still have 46 chromosomes, but each one has gone from being a single DNA molecule to being 2 DNA molecules bound together.

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One second bro, imma check cause this is in my next section that im studying. Give me like 5 minutes
From what im reading it says that Chromosomes double aswell... Im not to sure, but it says here "By the end of interphase, an individual cell has 2 full sets of DNA, or chromosomes, and is large enough to divide." So im assuming that Chromosomes are DNA, because it says "A chromosome is one long continuous thread of DNA."
Peace brah
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