Meiotic take in refers to each process which causes an allele to be over or chthonian represented in gametes formed during meiosis, and as a root in the next generation. An allele or process which causes meiotic mount is known as a requisition distorter as they distort the outcome of normal Mendelian segregation. Meiotic drive is the only genetic process which is known to subvert Mendels Law of Segregation (Lyttle, 1993). A number of processes have been set which cause meiotic drive, including spore killing in fungi, killer/ orchestrate alleles and many others. Meiotic drive was first described by Gershenson (1928) during his studies of sex ratios using Drosophila obscura. In this experiment he noticed two populations bred from two different pairs of flies 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 preferably 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 work 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 hike up meiotic drive, there are alleles that are in blotto proximity that receive the benefits of meiotic drive, or the disadvantages. There 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 terminate 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
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