For questions 1–4, match each stage of the cell cycle to its...

For questions 1–4, match each stage of the cell cycle to its correct description. Key: $\begin{array}{ll}{\text { a. } G_{1} \text { stage }} & {\text { b. S stage }} \\ {\text { c. } G_{2} \text { stage }} & {\text { d. } M(\text { mitotic }) \text { stage }}\end{array}$ At the end of this stage, each chromosome consists of two attached chromatids.

For questions 1–4, match each stage of the cell cycle to its correct description.
Key:
$\begin{array}{ll}{\text { a. } G_{1} \text { stage }} & {\text { b. S stage }} \\ {\text { c. } G_{2} \text { stage }} & {\text { d. } M(\text { mitotic }) \text { stage }}\end{array}$

At the end of this stage, each chromosome consists of two attached chromatids.

Key Concepts

Cell Cycle

The cell cycle is the series of events that take place in a cell leading to its division and replication. It includes both interphase, where growth and DNA replication occur, and the mitotic phase, during which the cell divides into two daughter cells.

Interphase

Interphase is the period of the cell cycle when the cell prepares for division by growing, performing its normal functions, and replicating its DNA. It is subdivided into several phases including G1, S, and G2.

S Phase

The S (synthesis) phase is the period during interphase when the cell replicates its DNA. By the end of S phase, each chromosome is composed of two identical sister chromatids, which remain attached until they are separated during mitosis.

Mitosis

Mitosis is the stage of the cell cycle in which the cell’s replicated chromosomes are precisely separated and distributed into two daughter cells. It ensures that each daughter cell receives an identical set of chromosomes.

DNA Replication

DNA replication is the fundamental process during the S phase in which the cell makes an exact copy of its DNA, leading to the formation of sister chromatids. This process is crucial for maintaining genetic continuity through cell division.

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