Complex sentence: Large genomic changes will occur with entire gene interchanges, by reassortment, as for replication, seven subgenomic mRNAs are produced and will enable reassortment in coinfections.
Split into simpler sentences: Large genomic changes will occur with entire gene interchanges, by reassortment. For replication, seven subgenomic mRNAs are produced and will enable reassortment in coinfections.