Genetics Module 3

What are the major stages of the cell cycle?

• Anaphase and Telophase

• Interphase and Mitosis

• G1 and S phase

• Prophase and Metaphase

What is the preparatory stage of DNA replication in the cell cycle?

• Go phase

• S phase

• G1 phase

• G2 phase

What is the quiet phase in the cell cycle where the cell can exit the cell cycle? The cell here is alive, keeps its specialized characteristics but does not replicate or divide its DNA.

• G0 phase

• G2 phase

• S phase

• G1 phase

What is the result of DNA replication in the S phase of the cell cycle?

• Production of carbohydrates

• Synthesis of microtubules

• Make identical copies of DNA/Replicate DNA

• Assembly and storage of membranes

What is the structure that serves as the attachment site for the microtubules or spindle fibers in the cell cycle?

• Chromatid

• Furrow

• Kinetochore

• Centromere

What is the phase in the cell cycle where the chromosomes become visible as threadlike structures and the nuclear envelope breaks down? And the chromosome condense and become visible as two sister chromatids held together at the centromere.

• Prophase

• Metaphase

• Anaphase

• Telophase

What happens in the metaphase of the cell cycle?

• Mitotic spindle disassembles

• Cytokinesis begins

• Chromosomes begin to align at the center of the cell

• Chromosomes move toward their respective poles

A second group of microtubules attach to one end (to the kinetochore of each chromatid) and its other end (to one of the poles of the cell)

What occurs in the anaphase of the cell cycle?

• Chromosomes align at the equator of the cell

• Chromosomes begin to decondense

• Nuclear envelope reforms

• Chromosomes are pulled by their kinetochore to opposite/respective poles

What is the stage in the cell cycle where the chromosomes decondense, the mitotic spindle disassembles, reforms/restore nuclear envelope and nucleoli resynthesize?

• Anaphase

• Metaphase

• Prophase

• Telophase