This suggests that only two of the four meiotic daughter chromosomes of a homologous pair can be recombinant via crossingover. Is this true? Or can you have more complex patterns, like the one below, in which all four daughters are recombinant? Does the X-shaped geometry of the doubled chromosomes play a role in models of crossover phenomena?
ps. Sorry if my terminology is strange. I'm a beginner! Experts: Edits to improve clarity welcome!