A5101843896- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Animal Behavior and Reproduction
- Genetic diversity and population structure
- Turtle Biology and Conservation
- Chromosomal and Genetic Variations
Abstract Almost all lizard families in the pleurodont clade share same XY system. This system was meticulously studied Anolis carolinensis, where it shows a highly degenerated Y chromosome and male-specific X dosage compensation mechanism. Corytophanids (casque-headed lizards) have been proposed as only family to lack In this study, we worked with extensive genomic transcriptomic data from Basiliscus vittatus, member of Corytophanidae that inhabits tropical rainforests Mexico. We confirmed...
The age of sex chromosomes is commonly obtained by comparing the substitution rates XY gametologs. Coupled with phylogenetic reconstructions, one can refine origin a chromosome system relative to specific speciation events. However, these approaches are insufficient determine presence and duration ancestral systems that were lost in some species. In this study, we worked genomic transcriptomic data from mammals squamates analyzed effect male mutation bias on X-linked sequences groups. We...
Non-avian reptiles, unlike mammals and birds, have undergone numerous sex determination changes. Casque-Headed Lizards replaced the ancestral XY system shared across pleurodonts with a new pair of chromosomes. However, evolutionary forces that triggered this transition remained unclear. An interesting hypothesis suggests species intermediate states, chromosomes but also thermal-induced reversal at specific incubation temperatures, could be more susceptible to turnovers. We contrasted...
ABSTRACT Non-avian reptiles, unlike mammals and birds, have undergone numerous sex determination turnovers. For example, casque-headed lizards replaced the ancestral XY system shared across pleurodonts with a new pair of chromosomes. However, evolutionary forces that triggered this transition remained unclear. An interesting hypothesis suggests species intermediate states, chromosomes but also thermal-induced reversal at specific incubation temperatures, could be more susceptible to We...