Sentences with phrase «genes during meiosis»
Diversity results from the re-assortment of genes during meiosis and genetic mutation.
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Recombination refers to the formation of new combinations of genes naturally during meiosis, which is a stage of the cell cycle where chromosomes pair up and undergo exchange.
Such costs include: (1) metabolic energy that must be devoted to mating and meiosis; (2) energy and time expended locating a mating partner; (3) that only 50 % of parental genes are transmitted to any given progeny or that two individuals are required to produce one progeny (resulting in the so - called 2-fold cost of sex); and (4) the fact that two genomes that have run the gauntlet of adaptive selection are shuffled during the process, breaking apart well - adapted genomic configurations [57].
A further possibility is that the virulence reductions observed following mosquito transmission are due to the systematic resetting during meiosis of the expression of genes that have been switched on or up - regulated during asexual serial passage.