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Inversions can happen either through ectopic recombination between repetitive sequences, or through chromosomal breakage followed by non-homologous end joining. [4] Inversions are of two types: paracentric and pericentric. Paracentric inversions do not include the centromere, and both breakpoints
Inversions that exclude the centromere are known as paracentric inversions, which result in unbalanced gametes after meiosis. [2] During prophase of meiosis I, homologous chromosomes form an inversion loop and crossover occurs. If a paracentric inversion has occurred, one of the products will be acentric, while the other product will be dicentric.
These differences in plumage result from a balanced chromosomal inversion polymorphism; in white-striped (WS) birds, one copy of chromosome 2 is partly inverted, while in tan-striped (TS) birds, both copies are uninverted. [41] The plumage differences are paralleled by differences in behavior and breeding strategy.
Importantly, individuals can also differ not only in their current state, but in the magnitude or even direction of response to a given stimulus. [5] Such phenomena, often explained in terms of inverted-U response curves, place differential psychology at an important location in such endeavours as personalized medicine, in which diagnoses are customised for an individual's response profile.
While the idea of dorsoventral axis inversion appears to be supported by morphological and molecular data, others have proposed alternative plausible hypotheses (reviewed in Gerhart 2000). [1] One assumption of the inversion hypothesis is that the common ancestor of protostomes and chordates already possessed an organized central nervous system ...
In other words, the difference between "the whole chromosome is a centrome" and "the chromosome has no centrome" is hazy and usage varies. Beyond "polycentricity" being used more about defects, there is no clear preference in other topics such as evolutionary origin or kinetochore distribution and detailed structure (e.g. as seen in tagging or ...
The first phase of the rapid-fire effort by Tesla CEO Elon Musk and President Donald Trump to cut waste from government agencies appears driven more by an ideological assault on federal agencies ...
Indigenous psychology; Individual differences psychology; Industrial and organizational psychology; International psychology; Investigative psychology; Legal psychology;