Which stage of Meiosis I is characterized by homologous chromosomes pairing and exchanging genetic material?

• A. Prophase I
• B. Metaphase I
• C. Anaphase I
• D. Telophase I

Answer: (A)

Verified step by step guidance

1. Understand the process of Meiosis I, which is the first division in meiosis where homologous chromosomes are separated.
2. Recall that Meiosis I consists of several stages: Prophase I, Metaphase I, Anaphase I, and Telophase I.
3. Focus on Prophase I, where homologous chromosomes pair up in a process called synapsis, forming structures known as tetrads.
4. During Prophase I, crossing over occurs, which is the exchange of genetic material between non-sister chromatids of homologous chromosomes.
5. Recognize that the exchange of genetic material during Prophase I increases genetic diversity, which is a key feature of sexual reproduction.