Meiotic Drive And Other Cheaters

meiotic Drive and Other Cheaters Meiotic take in refers to each procedure which causes an allele to be over or chthonian represented in gametes formed during meiosis, and as a root in the next gene proportionalityn. An allele or process which causes meiotic mount is known as a command distorter as they distort the outcome of normal Mendelian segregation. Meiotic assume is the only genetic process which is known to trim Mendels Law of Segregation (Lyttle, 1993). A number of processes halt been set which cause meiotic drive, including spore killing in fungi, slayer/ orchestrate alleles and many others. Meiotic drive was first describe by Gershenson (1928) during his studies of sex ratios using Drosophila obscura. In this try he noticed two populations bred from two different pairs of fly which had a largely female to male ratio. Due to these results he cogitate that this was due to a genetic process as the results were non Mendelian as a 50/50 ratio mingled with the sexes should have been observed. The term meiotic drive was first coined in 1957 by Sandler and Novitski (1957).

Meiotic drive has potential to be kinda deleterious to progeny fitness, but as pointed out by Hiatt and Dawe (2003) meiotic drive systems tend to be found in gene-sparse regions of chromosomes, presumably to protect fitness of future generations. None the less, these systems reckon at the expense of the fitness of the whole organism in favour of the few genes which cause the meiotic drive. Meiotic drive occurs in the germline between homologous alleles and chromosomes. Along with alleles that actively hobo up meiotic drive, thither are alleles that are in blotto proximi ty that receive the benefits of meiotic driv! e, or the disadvantages. in that respect are many processes by which meiotic drive occurs. In virtually cases, there is a driving allele(s) known as the segregation distorter set which will suppress or gouge the homologous allele or chromosome during or after gamete formation. However, there are...If you deprivation to get a full essay, order it on our website: OrderEssay.net

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