Keywords: gene drvie natural
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Centromere drive: model systems and experimental progressD. Dudka and M. A. Lampson, Chromosome Research, 2022.
Centromeres connect chromosomes and spindle microtubules to ensure faithful chromosome segregation. Paradoxically, despite this conserved function, centromeric DNA evolves rapidly and centromeric proteins show signatures of positive selection. The centromere drive hypothesis ... |
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Sequence of the supernumerary B chromosome of maize provides insight into its drive mechanism and evolutionN. Blavet, H. Yang, H. Su, P. Solanský, R. N. Douglas, M. Karafiátová, L. Šimková, J. Zhang, Y. Liu, J. Hou, X. Shi, C. Chen, M. El-Walid, M. E. McCaw, P. S. Albert, Z. Gao, C. Zhao, G. Ben-Zvi, L. Glick, G. Kol, J. Shi, J. Vrána, H. Šimková, J. C. Lamb,, Proceedings of the National Academy of Sciences, 118:e2104254118. 2021.
B chromosomes are nonvital chromosomes found in thousands of plants and animals that persist through various drive mechanisms. The drive mechanism of the maize B chromosome consists of mitotic nondisjunction at the second pollen division to produce two unequal sperm and then the ... |
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Experiments confirm a dispersive phenotype associated with a natural gene drive systemJ.-N. Runge and A. K. Lindholm, Royal Society Open Science, 8:202050. 2021.
Meiotic drivers are genetic entities that increase their own probability of being transmitted to offspring, usually to the detriment of the rest of the organism, thus ‘selfishly’ increasing their fitness. In many meiotic drive systems, driver-carrying males are less ... |
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Autosomal suppression and fitness costs of an old driving X chromosome in Drosophila testaceaG. Keais, S. Lu and S. Perlman, Journal of Evolutionary Biology, 2020.
Driving X chromosomes (XDs) are meiotic drivers that bias their own transmission through males by killing Y-bearing gametes. These chromosomes can in theory spread rapidly in populations and cause extinction, but many are found as balanced polymorphisms or as ?cryptic? XDs shut ... |
