ratchet$66828$ - traducción al griego
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ratchet$66828$ - traducción al griego

IRREVERSIBLE ACCUMULATION OF DELETERIOUS MUTATIONS IN THE ABSENCE OF GENETIC RECOMBINATION
Muller’s ratchet; Mullers ratchet; Muller ratchet; Muller's Ratchet; Müller’s ratchet
  • Illustration of chromosome crossover during genetic recombination

ratchet      
n. οδωντοτός τροχός, οδούς σταματών την προς τα οπίσω κίνησιν του, αναστολεύς
tie down         
  • A ratchet tie-down strap
LOAD SECURING WEBBING
Tie downs; Ratchet tie-down strap; Lashing strap; Ratchet strap; Tie down straps; Tiedown; Tie down
δεσμεύω

Definición

ratchet-wheel
n.
(Mach) Ratchet.

Wikipedia

Muller's ratchet

In evolutionary genetics, Muller's ratchet (named after Hermann Joseph Muller, by analogy with a ratchet effect) is a process through which, in the absence of recombination (especially in an asexual population), an accumulation of irreversible deleterious mutations results. This happens due to the fact that in the absence of recombination, and assuming reverse mutations are rare, offspring bear at least as much mutational load as their parents. Muller proposed this mechanism as one reason why sexual reproduction may be favored over asexual reproduction, as sexual organisms benefit from recombination and consequent elimination of deleterious mutations. The negative effect of accumulating irreversible deleterious mutations may not be prevalent in organisms which, while they reproduce asexually, also undergo other forms of recombination. This effect has also been observed in those regions of the genomes of sexual organisms that do not undergo recombination.