A pair of homologous chromosomes before meiosis.
Note that two gene loci have been indicated.

The homologous chromosomes have paired (synapsed) during the first division of meiosis.

Select several of the possible crossover events that might occur.
Will the segregation of these two gene loci occur frequently or rarely?

• Crossover a-e possibility #1
• Crossover a-e possibility #2
• Crossover a-e possibility #3
• Crossover a-e possibility #4
• Crossover a-e possibility #5