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Multiple Choice
Which of the following best describes the relationship between a chromosome and sister chromatids during mitosis?
A
Sister chromatids are identical copies of a chromosome connected at the centromere.
B
A chromosome is a single strand of DNA, while sister chromatids are two separate chromosomes.
C
Sister chromatids are different chromosomes that pair up during mitosis.
D
Sister chromatids are formed during cytokinesis and separate into different cells.
Verified step by step guidance
1
Understand the structure of a chromosome: A chromosome is a single, long DNA molecule that contains many genes. It is visible during cell division.
Learn about sister chromatids: Sister chromatids are identical copies of a chromosome that are created during DNA replication in the S phase of the cell cycle.
Recognize the connection between sister chromatids: After replication, the sister chromatids are connected at a region called the centromere.
Identify the role of sister chromatids in mitosis: During mitosis, sister chromatids are separated into two new nuclei, ensuring each daughter cell receives an identical set of chromosomes.
Clarify the timing of sister chromatid formation: Sister chromatids are formed during the S phase of interphase, not during cytokinesis, which is the final step of cell division.