Question

during prophase i of meiosis, the homologs pair up tightly. this process is called:
convergence
sister chromatid exchange
recombination
synapsis

Explanation:

To solve this, we recall the stages of meiosis. In Prophase I of meiosis, the pairing of homologous chromosomes (homologs) is a specific process. Let's analyze each option:

• Convergence: Not a term for chromosome pairing in meiosis.
• Sister chromatid exchange: Occurs during crossing - over, not the pairing of homologs.
• Recombination: Involves genetic material exchange, not the initial pairing of homologs.
• Synapsis: By definition, it is the tight pairing of homologous chromosomes during Prophase I of meiosis.

Answer:

D. synapsis (assuming the options are labeled A - D as convergence (A), sister chromatid exchange (B), recombination (C), synapsis (D))