Which of the following distinguishes prophase I of meiosis from prophase of mitosis?

chromosomes become visible

homologous chromosomes pair up

spindle fibers form

nuclear membrane breaks down

1 answer

The distinguishing feature of prophase I of meiosis compared to prophase of mitosis is that homologous chromosomes pair up.

During prophase I of meiosis, homologous chromosomes undergo synapsis, forming pairs called tetrads, and can exchange genetic material through a process called crossing over. This pairing does not occur in mitosis, where individual chromosomes just condense and align separately without pairing.