Significance
Morphologically and chromosomes have actually over and over developed throughout the tree of life. Nevertheless, the level of differentiation between your sex chromosomes differs significantly across types. The Y chromosome gene activity decays, leaving genes on the sex chromosomes reduced to a single functional copy in males as sex chromosomes diverge. Mechanisms have actually developed to pay with this decrease in gene dosage. Right Here, we execute a comparative analysis of intercourse chromosome systems across poeciliid species and discover extreme variation in the amount of intercourse chromosome differentiation and Y chromosome degeneration. Also, we find proof for a full situation of chromosome-wide dosage compensation in seafood. Our findings have actually crucial implications for intercourse chromosome development and legislation.
When recombination is halted between your X and Y chromosomes, sex chromosomes commence to differentiate and change to heteromorphism. Because there is a variation that is remarkable clades into the amount of intercourse chromosome divergence, much less is well known concerning the variation in intercourse chromosome differentiation within clades. Right right right Here, we combined whole-genome and sequencing that is transcriptome to characterize the dwelling and preservation of intercourse chromosome systems across Poeciliidae, the livebearing clade which includes guppies. Continuar leyendo «Extreme heterogeneity in intercourse chromosome dosage and differentiation settlement in livebearers»