Question

which event characterizes prophase i of meiosis?
chromosome duplication
chromosome separation
chromosome alignment
synapsis and crossing over

Explanation:

• Chromosome duplication occurs in the interphase before meiosis, not in prophase I.
• Chromosome separation happens in anaphase I.
• Chromosome alignment takes place in metaphase I.
• Synapsis (pairing of homologous chromosomes) and crossing - over (exchange of genetic material between homologous chromosomes) are characteristic events of prophase I of meiosis.

Answer:

synapsis and crossing over