Multiple Choice
During Meiosis I, which of the following is separated?
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12. Meiosis
Introduction to Meiosis
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During which phase of meiosis does the process called crossing over occur?
A
Anaphase I
B
Prophase I
C
Telophase I
D
Metaphase 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, each genetically distinct from the parent cell.
Recognize that meiosis consists of two consecutive divisions: Meiosis I and Meiosis II. Each division has several phases: Prophase, Metaphase, Anaphase, and Telophase.
Identify that crossing over is a process where homologous chromosomes exchange genetic material. This increases genetic diversity in the resulting gametes.
Recall that crossing over occurs during Prophase I of Meiosis I. During this phase, homologous chromosomes pair up in a process called synapsis, forming structures known as tetrads.
Note that the exchange of genetic material between non-sister chromatids of homologous chromosomes occurs at points called chiasmata, which are visible during Prophase I.
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