Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following occurs during mitosis?
A
Crossing over of genetic material
B
Pairing of homologous chromosomes
C
Replication of DNA
D
Separation of sister chromatids
Verified step by step guidance
1
Understand that mitosis is a process of cell division that results in two genetically identical daughter cells from a single parent cell. It is primarily involved in growth and repair.
Recall that mitosis consists of several phases: prophase, metaphase, anaphase, and telophase. Each phase has specific events that occur.
During anaphase, the key event is the separation of sister chromatids. Sister chromatids are identical copies of a chromosome that were duplicated during the S phase of the cell cycle.
In anaphase, the sister chromatids are pulled apart by the spindle fibers attached to the centromeres, moving them to opposite poles of the cell. This ensures that each daughter cell will receive an identical set of chromosomes.
Note that the other options listed (crossing over, pairing of homologous chromosomes, and replication of DNA) are associated with meiosis or other stages of the cell cycle, not mitosis.