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Multiple Choice
Which of the following processes occurs during meiosis but not mitosis?
A
Crossing over
B
Spindle formation
C
Chromosome replication
D
Cytokinesis
Verified step by step guidance
1
Understand the basic difference between mitosis and meiosis: Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse daughter cells.
Identify the unique events in meiosis: Meiosis includes two rounds of division (meiosis I and meiosis II) and introduces genetic diversity through processes not found in mitosis.
Focus on crossing over: During prophase I of meiosis, homologous chromosomes pair up and exchange segments in a process called crossing over, which increases genetic variation.
Compare with mitosis: In mitosis, homologous chromosomes do not pair up, and crossing over does not occur, as the goal is to produce identical cells.
Conclude that crossing over is the process that occurs during meiosis but not mitosis, as it is essential for genetic diversity in gametes.