Multiple Choice
Mitosis is most similar to which stage of meiosis in terms of chromosome behavior (i.e., sister chromatids separate and the chromosome number is maintained)?
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17. Meiosis and Sexual Reproduction
Meiosis
Multiple Choice
Which statement is true of meiosis but not mitosis?
A
Homologous chromosomes undergo synapsis and can exchange DNA by crossing over during prophase I.
B
DNA replication occurs between two consecutive divisions so that chromosome number is maintained.
C
Each division produces two genetically identical daughter cells with the same chromosome number as the parent cell.
D
Sister chromatids separate during a single division to produce diploid daughter cells.
Verified step by step guidance1
Step 1: Understand the key differences between mitosis and meiosis, focusing on the processes that are unique to meiosis.
Step 2: Recall that meiosis consists of two consecutive divisions (meiosis I and meiosis II) following a single round of DNA replication, which reduces the chromosome number by half.
Step 3: Identify that during prophase I of meiosis, homologous chromosomes pair up in a process called synapsis, forming tetrads, which is not seen in mitosis.
Step 4: Recognize that during synapsis, homologous chromosomes can exchange genetic material through crossing over, increasing genetic diversity—this does not occur in mitosis.
Step 5: Compare the given statements to these unique features of meiosis to determine which one correctly describes a process exclusive to meiosis and not mitosis.
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