Parasites are more likely to be haploid, while host organisms are more likely to be diploid, according to results of a study in PNAS this week that seeks to explain the variety of ploidy found among ...

Life cycles that include sexual reproduction involve alternating haploid (n) and diploid (2n) stages, i.e., a change of ploidy is involved. To return from a diploid stage to a haploid stage, meiosis ...

During sexual reproduction, haploid gametes (i.e. eggs and sperm) are generated from diploid precursors through the specialized cell division of meiosis. Meiosis reduces ploidy by following one round ...