Studies in diverse biological systems have indicated that host–parasite co-evolution is
responsible for the extraordinary genetic diversity seen in some genomic regions, such as …

It is a commonly held view that genetically homogenous host populations are more
vulnerable to infection than genetically diverse populations. The underlying idea, known as …

Balancing selection is an evolutionary process that maintains genetic polymorphisms at
selected loci and strongly reduces the likelihood of allele fixation. When allelic …

The evolution of sex is one of the most important and controversial problems in evolutionary
biology. Although sex is almost universal in higher animals and plants, its inherent costs …

Sexual reproduction is conserved throughout each supergroup within the eukaryotic tree of
life, and therefore thought to have evolved once and to have been present in the last …

Why do infectious diseases erupt in some host populations and not others? This question
has spawned independent fields of research in evolution, ecology, public health, agriculture …

If parasites transmit more readily between closely related hosts, then parasite burdens
should decrease with increased genetic diversity of host populations. This important …

Sexual reproduction is widely regarded as one of the major unexplained phenomena in
biology. Nonetheless, while a general answer may remain elusive, considerable progress …

Because most clonal vertebrates have hybrid genomic constitutions, tight linkages are
assumed among hybridization, clonality, and polyploidy. However, predictions about how …

Why and how sexual reproduction is maintained in natural populations, the so-called “queen
of problems,” is a key unanswered question in evolutionary biology. Recent efforts to solve …