Sexual selection and its effect on the fixation of an asexual clone.

Polymorphic MHC loci in an asexual fish, the amazon molly (Poecilia formosa; Poeciliidae).

Genes of the major histocompatibility complex (MHC) encode molecules that control immune recognition and are highly polymorphic in most vertebrates. The remarkable polymorphisms at MHC loci may be maintained by selection from parasites, sexual selection, or both. If asexual species show equal (or higher) levels of polymorphisms at MHC loci as sexual ones, this would mean that sexual selection i...

A neutral model can explain geographic patterns of sexual and asexual individuals

Many species reproduce both sexually and asexually producing genetically unique and clonal recruits. The relative contribution of sexual and asexual reproduction is mostly considered a consequence of natural selection, for example, disfavouring sexual propagules during invasions. Here, we present a novel model for the invasion of species into a new habitat. The model is fully neutral with respe...

A Comparative in vitro Study of the Effect of Eosin B on Asexual Blood Stages and Gametocyte of Plasmodiun falciparum

Background and Objective: Malaria is one of the most life-threatening infectious diseases worldwide. Transmission of the parasite from human to vector mosquitoes is carried out by the gametocyte of the Plasmodium parasite, while these cells are not involved in the symptoms of the disease. The control of the human to mosquito  transmission stage of the parasite life cycle by antigametocyte drugs...

Investigation on sexual and asexual propagation methods of damask rose (rosa damascena mill.)

Experimental sexual selection in Chlamydomonas.

Sexual and asexual lines of the unicellular chlorophyte Chlamydomonas reinhardtii were propagated for about 100 sexual cycles and 1000 vegetative cycles in contrasted environments, liquid and solid growth media, in order to generate divergent natural and sexual selection. Sexual lines were transferred by many zygotes or by a single zygote in each sexual generation. By the end of the experiment ...