Genes in Conflict: The Biology of Selfish Genetic Elements by Austin Burt

By Austin Burt

In evolution, so much genes live to tell the tale and unfold inside populations simply because they bring up the facility in their hosts (or their shut kin) to outlive and reproduce. yet a few genes unfold despite being destructive to the host organism—by distorting their very own transmission to the subsequent iteration, or by means of altering how the host behaves towards relations. therefore, diverse genes in one organism could have diametrically adversarial pursuits and diversifications. masking all species from yeast to people, Genes in clash is the 1st e-book to inform the tale of egocentric genetic components, these consistently showing stretches of DNA that act narrowly to improve their very own replication on the cost of the bigger organism. As Austin Burt and Robert Trivers express, those egocentric genes are a common function of lifestyles with pervasive results, together with various counter-adaptations. Their unfold has created an entire global of socio-genetic interactions inside of participants, frequently thoroughly hidden from sight. Genes in clash introduces the topic of egocentric genetic parts in all its features, from molecular and genetic to behavioral and evolutionary. Burt and Trivers provide us entry for the 1st time to an important zone of research—now constructing at an explosive rate—that is cohering as a unitary entire, with its personal good judgment and interconnected questions, a subject matter guaranteed to be of putting up with significance to our figuring out of genetics and evolution. (20060428)

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We concentrate here on how each element gains its selfish benefit and on the consequences of its spread—for itself and for the larger genome. The t Haplotype The t haplotype in mice is a variant form of chromosome 17 that shows drive in males but is transmitted normally through females (Fig. 1). That is, in single matings by males it is transmitted to more than one-half of offspring—in fact, to about 90% (reviewed in Silver 1993, Lyon 2003; see also Ardlie and Silver 1996). 1 Drive of the t haplotype in male mice.

1979, Sano 1983, Sano 1990). Agropyron / Lophopyrum Sd-1 A segregation distorter factor Sd-1 on chromosome 7 of A. ) elongatum and L. ponticum kills ovules without it, in a wheat background (Dvorak 1980, Scoles and KibirgeSebunya 1982, Dvorak and Appels 1986). other kinds of killers undiscovered in the species we do cover. We concentrate here on how each element gains its selfish benefit and on the consequences of its spread—for itself and for the larger genome. The t Haplotype The t haplotype in mice is a variant form of chromosome 17 that shows drive in males but is transmitted normally through females (Fig.

Ssp. musculus, domesticus, castaneus, and bactrianus) at frequencies of about 5% (Lyon 1991, Ardlie and Silver 1996, 1998). Drosophila Segregation Distorter In SD/+ heterozygous males, + sperm are incapacitated and SD sperm can fertilize 95–99% of eggs. Transmission is normal in females. SD/SD homozygotes may or may not be viable and fertile. Found in D. melanogaster at frequencies of 1–5% (Temin et al. 1991). Spore killers In Sk/+ heterozygous asci, + ascospores are killed and only Sk ascospores are viable.

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