what happens in unequal crossing over? Something about gene replication and gene deletion?

Question

anonymous · Answer

This is a rare event which takes place during meiosis. It happens when chromosomes swap over but the bits that are exchanged aren't the same. This happens where homologous sequences are present on the chromosomes (remember the repetitive DNA which makes up the majority of the genome). The results are gene duplication on one chromosome and gene deletion on the other. This might be the mechanism by which gene families develop - genes which are useful to the organism confer an advantage and get fixed in the genome.

anonymous · Answer

in unequal crossing over one chromatin thread will get more portion that will cause duplication and on another thread there will be deletion of those genes....