During prophase I of meiosis, which of the following events occurs?

• A. Chromosomes line up individually along the metaphase plate.
• B. Sister chromatids separate and move to opposite poles.
• C. Chromosomes condense and homologous chromosomes pair up to form tetrads.
• D. The nuclear envelope reforms around separated chromosomes.

Answer: (C)

Verified step by step guidance

1. Understand that meiosis is a type of cell division that reduces the chromosome number by half, resulting in the production of gametes or spores.
2. Recognize that meiosis consists of two stages: Meiosis I and Meiosis II. Prophase I is a part of Meiosis I.
3. During Prophase I, homologous chromosomes pair up in a process called synapsis, forming structures known as tetrads.
4. Chromosomes condense, becoming more visible under a microscope, which is a key event in Prophase I.
5. Crossing over may occur during Prophase I, where homologous chromosomes exchange genetic material, increasing genetic diversity.