Category: Uncategorized

BOMBSHELL. “We are the descendants of viruses.” https://lnkd.in/guhpmyR View in LinkedIn

EVOLUTION PATH. "If many adaptive changes occur when a chromosome in a co-sexual species evolves into a sex chromosome, this would suggest that trade-offs are common; that is, that these changes were maladaptive in co-sexual ancestors." https://lnkd.in/exrSaeb View in LinkedIn

SPECIATION DRIVER. "These data provide strong evidence that sexual selection is driving behavioural isolation and speciation, supporting sexual selection as a cause for speciation in the wild." https://lnkd.in/eBtiTBE View in LinkedIn

ISOLATION. "One proposed mechanism of speciation is divergent sexual selection, whereby divergence in female preferences and male signals results in behavioural isolation." https://lnkd.in/eBtiTBE View in LinkedIn

CRAYFISH RAPID SPECIATION. "Generally, new species arise gradually over long periods of time, but the genetic studies indicate that in this case speciation was virtually instantaneous, something that happens in plants but is very rare in animals. And the marbled crayfish is the only one among its 14,000 crustacean relatives able to clone itself." https://lnkd.in/epB74fM View in LinkedIn

GENETIC DIVIDE. "In the new study, published this month on the bioRxiv preprint server, researchers show that the slough crayfish males can’t fertilize marbled crayfish eggs, a hallmark of a species split, and that the clones contain enough genetic differences to justify designating them a separate species." https://lnkd.in/epB74fM View in LinkedIn

ORIGIN. "Our data show that sex chromosomes evolved from a common autosomal origin before the diversification of the extant dioecious species." https://lnkd.in/ey4vMRy View in LinkedIn

IMPORTANT QUESTION. "Understanding the driving forces and molecular processes underlying dioecy and sex chromosome evolution, leading from hermaphroditism to the occurrence of male and female individuals, is of considerable interest in fundamental and applied research." https://lnkd.in/ey4vMRy View in LinkedIn

CLUES IN NATURE. "The sexuality of flowers is an important reproductive character in angiosperms. An insight into the evolutionary events that led to the appearance of monoecious and dioecious species can be gained by comparing closely related groups with contrasting characters." https://lnkd.in/e5Q-RPV View in LinkedIn

CHROMOSOME REARRANGEMENTS. "TE insertions probably contribute to the greater degree of rearrangement of Y than X chromosomes observed in mammals and in the plants papaya and S. latifolia." (TE = transposable elements). https://lnkd.in/exrSaeb View in LinkedIn