genetic bottleneck

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  • A genetic bottleneck may result from the small numbers of remaining plants.
  • Other research has cast doubt on the genetic bottleneck theory.
  • It concluded that bison seem to be doing quite well, despite their apparent genetic bottleneck.
  • Even that herd was reduced to only a few dozen individuals, so concerns about a genetic bottleneck are significant.
  • In spite of the small population size, the animals do not appear to suffer genetic problems from the genetic bottleneck.
  • It is thought that the species went through a prolonged period of inbreeding following a genetic bottleneck during the last ice age.
  • This form might be separable as a distinct species, or it might just be a particularly distinct population due to genetic bottleneck effects.
  • This created a genetic bottleneck that some people think will render breeding from closed stud books not viable.
  • The severe reduction of the species into a single small population may have created a genetic bottleneck; genetic analysis is underway.
  • As a result of such efforts, the extant herd has retained a far greater genetic diversity than its genetic bottleneck made likely.
  • A species that successfully radiates (forming many new species after a possible genetic bottleneck) has become too successful to be considered a living fossil.
  • Nevertheless, a genetic bottleneck exists in the existing population, which could make it more susceptible to disease and pollution.
  • This hypothesis is supported by genetic studies which suggest a geologically recent genetic bottleneck followed by a rapid population expansion.
  • This fragmentation has also led to physical and reproductive isolation in the smaller, more isolated populations, causing a genetic bottleneck.
  • Furthermore, the successful males act as a genetic bottleneck, leading to more rapid genetic drift or inbreeding problems in small populations.
  • There is a marked trend for insularity, surviving genetic bottlenecks and r-strategy to allow far lower MVPs than average.
  • The Florida panther experienced a genetic bottleneck in the early 1990s where the population was reduced to ~ 25 adult individuals.
  • The study found that, in the DNA of the horses tested, there was no evidence of a genetic bottleneck in the breed's history.
  • Preliminary observations indicate that there is considerable variability, indicating no genetic bottlenecks that might be expected from point introductions.
  • The species may face a genetic bottleneck in the future due to this ratio and the fact that each female only lays 2-3 eggs per year.
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