biology meiosis

hey can anyone help with the idea of crossing over?
I don't understand the difference between the term chiasmata and bivalents.
would it be correct to say bivalents form and chiasmata exchange dna??
pls could someone put it into a sentence

A bivalent is the joining of two pairs of homologous chromosomes at a centromere in meiosis I. Once a bivalent is formed, crossing over occurs at chiasmata (chiasmata or chiasma for the singular are the sites of crossover). Crossing over occurs between non-sister chromatids of homologous chromosomes. The crossing over of alleles between these chromatids contributes towards increasing genetic variation. Hopefully this makes sense

hey can anyone help with the idea of crossing over?
I don't understand the difference between the term chiasmata and bivalents.
would it be correct to say bivalents form and chiasmata exchange dna??
pls could someone put it into a sentence

Heya!
If it helps, Study Mind has free revision notes on the topic that you will find helpful

I hope this helps!
MIlena
UCL PFE
Study Mind