X-chromosome driven speciation through testes-expressed genes: comparative popu...
X-chromosome driven speciation through testes-expressed genes: comparative population genomics meets scRNA analysis in primates
Primate X chromosomes evolve extraordinary fast and are also tightly associated with the establishment of reproductive barriers between emerging species.
The hypothesis of this proposal is that genetic conflicts between the X chr...
Primate X chromosomes evolve extraordinary fast and are also tightly associated with the establishment of reproductive barriers between emerging species.
The hypothesis of this proposal is that genetic conflicts between the X chromosome and the rest of the genome during spermatogenesis cause rapid X chromosome evolution and build reproductive barriers. Genetic conflicts for transmission to haploid gametes, called meiotic drive, will cause non-adaptive evolution, which is expected to be countered by other genomic elements that will then be under selection. Such an arms race is expected to lead to a very rapid evolution of the X chromosome and a fast accumulation of incompatibilities between isolated populations, leading to speciation.
The goal of the project is to identify the underlying mechanisms and the genes responsible for meiotic drive using primates as the study system. A priori candidate processes include X-linked genes under repeated fast evolution with a focus on genes targeted by pachytene piRNAs and on ampliconic genes. Population genomics analysis will generate specific hypotheses that will then be tested by following expression of candidate genes during spermatogenesis through scRNAseq, and validate findings by ultrasensitive, in situ, staining of single transcripts and immunohistochemistry. Finally, the behaviour of key genes and processes will then be investigated in incipient speciation events.
Specifically, 850 individuals of 250 species of primates with full genome data will be analysed for candidate genes on the X chromosome. These genes will be investigated in large scale comparative scRNA sequencing analyses of >10,000 individual testicular cells from 14 primate species, including all great ape species, thus allowing expression trajectories through spermatogenesis to be inferred and followed up in functional experiments.
The success criterion is to report on primate speciation genes together with their biological mode of action.ver más
02-11-2024:
Generación Fotovolt...
Se ha cerrado la línea de ayuda pública: Subvenciones destinadas al fomento de la generación fotovoltaica en espacios antropizados en Canarias, 2024
01-11-2024:
ENESA
En las últimas 48 horas el Organismo ENESA ha otorgado 6 concesiones
01-11-2024:
FEGA
En las últimas 48 horas el Organismo FEGA ha otorgado 1667 concesiones
Seleccionando "Aceptar todas las cookies" acepta el uso de cookies para ayudarnos a brindarle una mejor experiencia de usuario y para analizar el uso del sitio web. Al hacer clic en "Ajustar tus preferencias" puede elegir qué cookies permitir. Solo las cookies esenciales son necesarias para el correcto funcionamiento de nuestro sitio web y no se pueden rechazar.
Cookie settings
Nuestro sitio web almacena cuatro tipos de cookies. En cualquier momento puede elegir qué cookies acepta y cuáles rechaza. Puede obtener más información sobre qué son las cookies y qué tipos de cookies almacenamos en nuestra Política de cookies.
Son necesarias por razones técnicas. Sin ellas, este sitio web podría no funcionar correctamente.
Son necesarias para una funcionalidad específica en el sitio web. Sin ellos, algunas características pueden estar deshabilitadas.
Nos permite analizar el uso del sitio web y mejorar la experiencia del visitante.
Nos permite personalizar su experiencia y enviarle contenido y ofertas relevantes, en este sitio web y en otros sitios web.