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Interesting question. The GC-content seems to evolve over time and it also seems that the GC-content of coding regions is higher than for the surrounding non-coding regions (see reference 1). If there is a specific function for this higher GC-content or not is (if I understand this right) debated among the groups which do research in this field. Have a look ...


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The new mexico whiptail reproduces purely through parthenogenesis. The species itself originates as a hybrid of two other species of whiptail, but the hybridization can't make fertile males. The females can reproduce through parthenogenesis so that's how the species continues to exist. So 100% of the genome is passed mother to daughter for many generations, ...


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Is there any species (not just mammals) where most, or even all, of the genome is inherited in a sex-specific trajectory? If all the genome is passed on by only one sex, then the other sex will necessarily disappear (in absence of social reasons) (and the species may go extinct if the presence of this other sex is necessary). However some cases such as ...


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In birds and reptiles females are the heterogametic sex with allosome configuration ZW. However it has been reported that a homogametic WW female boa was born by parthenogenesis. So it means that although W is shorter than Z, it can still support life. So I guess that ZW system in general exchanges more sex-limited genetic material than XY system. Platypus ...



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