In summer of 2024, the XEC strain of SARS-CoV-2, the causati…

In summer of 2024, the XEC strain of SARS-CoV-2, the causative agent of the current COVID pandemic, was detected, and it displaced other variants as it spread globally during fall 2024. XEC is a recombinant, that is, it resulted when two strains infected an individual, and inside a single cell infected with both strains, during replication, the RNA-dependent RNA polymerase replicated part of the genome of the first, dropped off and attached to the genome of the second, replicated part of it, dropped off, reattached to the genome of the first, etc., yielding a replicated genome consisting of parts of both strains. This type of recombination, that can result in substantially different antigenic structures on the virus that can lead to immune escape, is termed ______. Copyright 2024 by Dr. Jonathan A. Miller. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 260: Microbiology at Edmonds College. Outside help is not allowed.