Cell Division and Chromosome Dynamics

When does a cell duplicate its DNA in preparation for mitosis?

• Prophase

• Metaphase

• Interphase

• Telophase

How are chromosomes counted in a cell?

• By the number of chromatids

• By the number of centromeres

• By the total length of DNA

• By the number of genes present

A human cell normally has 46 chromosomes. After DNA replication in interphase, how many chromosomes and chromatids are present?

• 46 chromosomes, 46 chromatids

• 92 chromosomes, 92 chromatids

• 46 chromosomes, 92 chromatids

• 92 chromosomes, 46 chromatids

What is the correct order of the stages of mitosis?

• Metaphase, Prophase, Anaphase, Telophase

• Prophase, Metaphase, Anaphase, Telophase

• Anaphase, Telophase, Prophase, Metaphase

• Telophase, Anaphase, Metaphase, Prophase

Which event characterizes the metaphase stage of mitosis?

• Chromosomes condense and become visible.

• Sister chromatids separate and move to opposite poles.

• Chromosomes line up in the middle of the cell.

• New nuclei form around the separated chromosomes.

What happens to sister chromatids during anaphase?

• They condense and become visible.

• They line up at the cell's equator.

• They separate and move to opposite ends of the cell.

• They are surrounded by new nuclear envelopes.

What is the primary role of cytokinesis in cell division?

• To duplicate the DNA.

• To separate the sister chromatids.

• To split the cytoplasm and form two distinct daughter cells.

• To condense the chromosomes.