Match the event to the proper phase of the cell cycle: DNA is replicated. Chromosomes condense, mitotic spindle forms, nuclear envelope breaks down, sister chromatids attach to th... Match the event to the proper phase of the cell cycle: DNA is replicated. Chromosomes condense, mitotic spindle forms, nuclear envelope breaks down, sister chromatids attach to the spindle. Sister chromatids line up along the equator of the cell. Sister chromatids split at the centromere and move to opposite poles of the cell. Chromosomes reach opposite poles and de-condense, nuclear envelopes reform, spindle is broken down.
Understand the Problem
The question requires matching descriptions of cellular events to the correct phase of the cell cycle. The events describe processes occurring during interphase, prophase, metaphase, anaphase, and telophase. The goal is to correctly associate each event with its corresponding phase.
Answer
The events matched to the cell cycle phases are: DNA replication (S phase), chromosome condensation (Prophase), sister chromatid alignment (Metaphase), sister chromatid separation (Anaphase), and chromosome de-condensation (Telophase).
Here's the matching of each event to the phase of the cell cycle:
- DNA is replicated: S phase (Synthesis phase)
- Chromosomes condense, mitotic spindle forms, nuclear envelope breaks down, sister chromatids attach to the spindle: Prophase
- Sister chromatids line up along the equator of the cell: Metaphase
- Sister chromatids split at the centromere and move to opposite poles of the cell: Anaphase
- Chromosomes reach opposite poles and de-condense, nuclear envelopes reform, spindle is broken down: Telophase
Answer for screen readers
Here's the matching of each event to the phase of the cell cycle:
- DNA is replicated: S phase (Synthesis phase)
- Chromosomes condense, mitotic spindle forms, nuclear envelope breaks down, sister chromatids attach to the spindle: Prophase
- Sister chromatids line up along the equator of the cell: Metaphase
- Sister chromatids split at the centromere and move to opposite poles of the cell: Anaphase
- Chromosomes reach opposite poles and de-condense, nuclear envelopes reform, spindle is broken down: Telophase
More Information
The cell cycle consists of two major phases: interphase and the mitotic phase (M phase). Interphase includes G1, S, and G2 phases, during which the cell grows and DNA is replicated. The mitotic phase involves mitosis (nuclear division) and cytokinesis (cytoplasmic division), resulting in two daughter cells.
Tips
A common mistake is confusing the order of the phases of mitosis. Remember the acronym "PMAT" (Prophase, Metaphase, Anaphase, Telophase) to help recall the correct sequence.
Sources
- 6.2 The Cell Cycle – Concepts of Biology – 1st Canadian Edition - opentextbc.ca
- Phases of mitosis | Mitosis | Biology (article) - Khan Academy - khanacademy.org
- The Steps of Mitosis | Biology for Non-Majors I - Lumen Learning - courses.lumenlearning.com
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