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Multiple Choice
Which of the following best describes what happens during mitosis?
A
Four non-identical gametes are produced from one parent cell.
B
A single cell divides to produce two genetically identical daughter cells.
C
The cell's DNA is replicated, but the nucleus does not divide.
D
Homologous chromosomes pair up and exchange genetic material.
Verified step by step guidance
1
Step 1: Begin by understanding the process of mitosis. Mitosis is a type of cell division that results in two genetically identical daughter cells from a single parent cell. It is essential for growth, repair, and asexual reproduction in multicellular organisms.
Step 2: Analyze the options provided in the problem. The first option describes the production of four non-identical gametes, which is characteristic of meiosis, not mitosis. Eliminate this option.
Step 3: The second option states that a single cell divides to produce two genetically identical daughter cells. This aligns with the definition of mitosis, so keep this option for further consideration.
Step 4: The third option mentions DNA replication without nuclear division. This describes interphase, specifically the S phase, where DNA is replicated before mitosis begins. Eliminate this option.
Step 5: The fourth option refers to homologous chromosomes pairing up and exchanging genetic material, which is a process called crossing over that occurs during meiosis, not mitosis. Eliminate this option.