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Multiple Choice
Which eukaryotic cell-cycle event is absent in binary fission?
A
Mitosis
B
DNA replication
C
Interphase
D
Cytokinesis
Verified step by step guidance
1
Understand the context: Binary fission is a method of asexual reproduction commonly found in prokaryotic organisms, such as bacteria. It involves the division of a single organism into two parts, each with a copy of the original DNA.
Identify the key differences: Eukaryotic cells undergo a cell cycle that includes several distinct phases, such as interphase, mitosis, and cytokinesis. In contrast, binary fission is a simpler process that does not involve all these phases.
Focus on mitosis: Mitosis is a process unique to eukaryotic cells where the nucleus divides, resulting in two identical nuclei. This step is crucial for the distribution of chromosomes into daughter cells.
Compare with binary fission: In binary fission, there is no mitosis because prokaryotic cells do not have a nucleus. Instead, the DNA is replicated and the cell divides directly.
Conclude the absent event: Since mitosis involves the division of the nucleus, and prokaryotic cells lack a nucleus, mitosis is the eukaryotic cell-cycle event absent in binary fission.