What is the difference in prophase one and prophase two?

Answer AND Explanation:

The main difference between prophase I and II is that during prophase 1, the pairing of homologous chromosomes and the synapsis allows the non sister chromatids to cross over at chiasmata, leading to genetic recombination between chromosomes. During prophase II,synapsis does not occur hence, no genetic recombination takes place between the chromosomes.

During Prophase I the Centrosome is duplicated during the interphase, which is a process prior to prophase while in Prophase II, the Centrosome is duplicated during the prophase II due to the lack of an interphase.

Prophase I

Prophase II

a community that experiences major changes undergoes progress

the answer is b.) hydrogen bonds between bases.