Mitosis and Meiosis

• G1

• S

• G2

• M

Refer to the diagram shown above. What occurs at G1 ?

• Chromatin condenses to form chromosomes

• Cleavage of cytoplasm and formation of cell plate

• Period of growth and development between mitotic divisions

• Nuclear membrane, nucleolus, and chromatin fade

Which statement below correctly identifies what happens prior (before) to the cell being allowed to

enter the G2 stage of the cell cycle?

• The cell makes RNA

• The nucleus divides

• DNA replication occurs

• The chromosomes align

What part of the cell cycle results in daughter cells?

• Mitosis

• Prophase

• Cytokinesis

• G2 checkpoint

What is the purpose of mitosis?

• It guarantees that each daughter cell has half the amount of DNA of parent cells.

• It ensures that new nuclei have an exact copy of DNA.

• It ensures the reproduction of mitochondria and chloroplasts.

• It prevents the occurrence of cancer cells.

What process results in two complete strands of DNA from one original strand?

• DNA replication

• DNA transcription

• DNA translation

• DNA transformation

Refer to the diagram above. Arrange the stages in order.

• I, II, III, IV, V, VI

• VI, II, I, IV, V, III

• III, VI, I, IV, II, V

• V, III, IV, I, II, VI

Which stage of the cell cycle in the diagram above shows the formation of spindle fibers and chromatin condensing into chromosomes?

• I

• III

• IV

• VI

During prophase, chromosomes become visible, the spindle forms, and the nucleolus and nuclear envelope disappear. In which cellular process does prophase occur?

• Mitosis

• DNA replication

• Interphase

• Growth Phase

The diagram above shows stages of the cell cycle in random order. What is occurring within the cell labeled II?

• A cleavage (splitting) furrow is forming to divide the cell into two daughter cells.

• DNA is replicated so there are two copies of each chromosome in each daughter cell.

• Chromatin is condensing to form visible chromosomes.

• The spindle is attaching to chromatids to move them to the middle.