Multiple Choice
In the process of meiosis, what results in the production of four genetically distinct daughter cells?
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12. Meiosis
Introduction to Meiosis
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In what stage of meiosis does crossing over occur?
A
Prophase I
B
Metaphase I
C
Anaphase I
D
Telophase I
Verified step by step guidance1
Understand that meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells. It consists of two stages: Meiosis I and Meiosis II.
Recognize that crossing over is a process where homologous chromosomes exchange genetic material. This increases genetic diversity in the resulting gametes.
Identify that crossing over occurs during Prophase I of Meiosis I. During this stage, homologous chromosomes pair up in a process called synapsis, forming structures known as tetrads.
Note that the physical exchange of chromosome segments between non-sister chromatids occurs at points called chiasmata during Prophase I.
Remember that crossing over is a key event in Prophase I, distinguishing it from other stages like Metaphase I, Anaphase I, and Telophase I, where different processes occur.
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