Multiple Choice
How does Anaphase I in meiosis differ from Anaphase in mitosis?
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12. Meiosis
Introduction to Meiosis
Multiple Choice
In which phase of meiosis does crossing over occur, where homologous pairs exchange genetic information?
A
Anaphase I
B
Telophase I
C
Prophase I
D
Metaphase I
Verified step by step guidance1
Understand the concept of meiosis: 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.
Learn about Prophase I: This is the first phase of Meiosis I, where homologous chromosomes pair up in a process called synapsis, forming structures known as tetrads.
Explore crossing over: During Prophase I, crossing over occurs. This is the exchange of genetic material between non-sister chromatids of homologous chromosomes, leading to genetic variation.
Recognize the significance of crossing over: Crossing over is crucial for genetic diversity, as it allows for new combinations of alleles, which can be beneficial for evolution and adaptation.
Differentiate between phases: Understand that crossing over is specific to Prophase I and does not occur in Anaphase I, Telophase I, or Metaphase I, which are other stages of meiosis with different functions.
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