Douglas J. Futuyma. Evolutionary Biology. Third edition. SUNY, Stony Brook. Sinauer. December 1998.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....7 See Section 3 for an overview of building blocks. 12 3 Non coding Segments Non coding segments model the intragenic regions reported in the biological literature and are the intron segments seen in the genetic based encoding (GBE) literature. They account for a large fraction of the DNA [Futuyma, 1986] and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA [Futuyma, 1986] The non coding sequences might also act as a library for adaptation. During RNA ....

....based encoding (GBE) literature. They account for a large fraction of the DNA [Futuyma, 1986] and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA [Futuyma, 1986]. The non coding sequences might also act as a library for adaptation. During RNA splicing the non coding sequences are stripped, producing a smaller RNA molecule. As the gene can be spliced in a variety of ways, the non coding sequence for one mRNA could be a coding sequence for another ....

Douglas J. Futuyma. Evolutionary Biology. Sinauer Associate, Sunderland, MA, 1986.

....is taken to mean that the evolution of one domain is partially dependent on the evolution of the other [8, 18, 19, 21, 27, 28, 36] or that one domain changes in the context of the other. The notion of co evolution places the emphasis on the evolution of interactions and on reciprocal evolution [9]. In human systems, co evolution in the sense of the evolution of interactions places emphasis on the relationship between the co evolving entities. Co evolution takes place within an ecosystem. An ecosystem in biology means that each kind of organism has, as parts of its environment, other ....

Futuyma D J, Evolutionary Biology, Sinauer Associates, Sunderland, MA, 1979.

....the number of copies of the coding segment within the chromosome. 3.2 Non coding Segments Non coding segments model the intragenic regions reported in the biological literature and are the intron segments seen in the GBE literature. They account for a 16 17 large fraction of the DNA [Futuyma, 1986] and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA [Futuyma, 1986] The non coding sequences might also act as a library for adaptation. During RNA ....

....seen in the GBE literature. They account for a 16 17 large fraction of the DNA [Futuyma, 1986] and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA [Futuyma, 1986]. The non coding sequences might also act as a library for adaptation. During RNA splicing the non coding sequences are stripped, producing a smaller RNA molecule. As the gene can be spliced in a variety of ways, the non coding sequence for one mRNA could be a coding sequence for another ....

Douglas J. Futuyma. Evolutionary Biology. Sinauer Associate, Sunderland, MA, 1986.

....specialized state. We suggest that functional specialization may be an evolutionary absorption state. Introduction Mathematical models have been rather successful in representing the population genetic mechanisms of adaptation, molecular evolution and speciation (Crow and Kimura, 1970; Futuyma, 1998; Kimura, 1983) One major class of evolutionary processes, however, has received relatively little attention from theorists, i.e. evolutionary innovation. Innovation is defined here as the origin of new body parts and or new body plans (Mller and Wagner, 1991) The process of innovation poses ....

Futuyma, D. J. 1998. Evolutionary Biology. Sunderland, MA: Sinauer.

....isolation for a wide range of migration rates, population sizes, intensities of selection for local adaptation, and the number of genetic changes required for reproductive isolation. Given a typical mutation rate on the order of 10 5 10 6 per locus per generation (e.g. Griths et al. 1996; Futuyma 1997) and assuming that there are at least on the order of 10 100 genes involved in the initial stages of the evolution of reproductive isolation (e.g. Singh 1990; Wu Palopoli 1994; Coyne Orr 1998; Naveira Masida 1998) the duration of speciation is predicted to range between 10 3 and 10 5 ....

Futuyma, D. J. 1997 Evolutionary biology. Sunderland, MA: Sinauer.

....in PC III, in contrast to their proximity in PC II. On the assumption that the timing of molar eruption in apes is equivalent, and by taking into account the timing of molar eruption in humans and our current understanding of phylogenetic relationships among extant hominoids (for overviews, see Futuyma 1998; Lewin 1998) one can advance some heterochronic inferences (see Fig.2) On PC I, great apes and humans differ from Hylobates mostly by predisplacement, Gorilla from Pongo by predisplacement, Pan from Gorilla by postdisplacement, and Homo from Pan by a combination of predisplacement and ....

Futuyma, D. J. 1998. Evolutionary Biology. Third edition. Sunderland, MA, Sinauer.

.... can it move off that peak, incurring a temporary ecological fitness cost, to explore the surrounding adaptive landscape and perhaps find a higher fitness peak elsewhere Wright s (1932, 1982) shifting balance theory in part addresses this problem of escaping from local evolutionary optima (see Futuyma, 1986, p. 174) He suggested that genetic drift operating in quasi isolated populations can sometimes allow one population to move far enough away from its current fitness peak that it enters a new adaptive zone at the base of a new and (and possibly higher) fitness peak. Once that population starts to ....

Futuyma, D. J. (1986). Evolutionary biology, 2nd ed.

....discussions with the members of the GPW s lab at Yale University during weekly meetings. y The financial support by NSF grant BIR 9400642 and the Yale Institute of Biospheric Studies is gratefully acknowledged. 11] Pleiotropy is the influence of the same genes on different characters , [3], p. 429) In more general terms, modularity requires that we look at a complex system from the point of view of three different and chronologically successive phases: the phase of emergence, the phase of actual functioning, and the phase of maintenance. In fact, for modularity to exist it is ....

Futuyma, Douglas, Evolutionary biology, Sinauer (1998).

....facilitates our research into non coding segments. Section 5 presents our experimental results. Section 6 ties everything together. Section 7 shows how this work can be extended. 2 Non coding segments Non coding segments model the intragenic regions reported in the biological literature [1, 8, 11] and are the intron segments seen in genetic based encoding literature [24, 35] The non coding sequences account for a large fraction of the DNA [11, 35] It is hypothesized that these segments are backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of ....

....this work can be extended. 2 Non coding segments Non coding segments model the intragenic regions reported in the biological literature [1, 8, 11] and are the intron segments seen in genetic based encoding literature [24, 35] The non coding sequences account for a large fraction of the DNA [11, 35]. It is hypothesized that these segments are backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA [11] Another conjecture is that the non coding sequences can act as a ....

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Douglas J. Futuyma. Evolutionary Biology. Sinauer Associate, Sunderland, MA, 1986.

....of increasing the number of copies of the coding segment within the chromosome. Non coding segments Non coding segments model the intragenic regions reported in the biological literature and are the intron segments seen in the GBE literature. They account for a large fraction of the DNA (Futuyma 1986) and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA (Futuyma 1986) The non coding sequences might also act as a library for adaptation. During RNA ....

....segments seen in the GBE literature. They account for a large fraction of the DNA (Futuyma 1986) and are believed to be backup material for the coding segments. For example, the frog Xenopus laevis has 450 copies of the gene codings for 18S and 28S rRNA and 24,000 copies of the gene for 5S rRNA (Futuyma 1986). The non coding sequences might also act as a library for adaptation. During RNA splicing the non coding sequences are stripped, producing a smaller RNA molecule. As the gene can be spliced in a variety of ways, the non coding sequence for one mRNA could be a coding sequence for another ....

Futuyma, D. J. 1986. Evolutionary Biology. Sunderland, MA: Sinauer Associate.

....itself is defining the division of tasks. It is also different from Altenberg s constructional selection mechanism in which a structural unit increases in frequency if it has fewer pleiotropic effects (Altenberg, 1995) Pleiotropy is the influence of the same genes on different characters , Futuyma 1998, p. 429) In our model the duplicated units all have pleiotropic effects but they tend to reduce these effects by functional specialization after duplication. We conclude that our model suggests a third possible mode for the origin of modularity, besides constructional selection (Altenberg, 1995) ....

Futuyma, D. J. (1998). Evolutionary Biology. Sinauer, Sunderland.

....evolution in ways that are starting to be understood. At the phenotypic level evolutionary biologists recognize homologous and analogous phenotypic traits in organisms belonging to different species or higher taxa, and repeated components in individual organisms, such as vertebrae in mammals (see Futuyma 1998, p. 669) Given the postulated existence of modules at all these levels and their importance for describing and explaining both structure and process at each level, it is critical to understand what modules are, why and how they emerge, how they change, etc. To achieve this understanding it ....

.... The mapping is modular when there are few pleiotropic effects among characters serving different functions, with pleiotropic effects existing mainly among characters which serve one and the same function (Figure 1, right) Pleiotropy is the influence of the same genes on different characters , Futuyma 1998). On the contrary, we have a nonmodular mapping when there are pleiotropic effects both among characters serving different functions and among characters serving a single function (Figure 1, left) Therefore, modules can be defined as a collection of characters at different levels that are all ....

Futuyma, D. J. 1998. Evolutionary biology. Sunderland, Mass.: Sinauer.

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Douglas J. Futuyma. Evolutionary Biology. Third edition. SUNY, Stony Brook. Sinauer. December 1998.

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Futuyma, D. J. (1998), Evolutionary biology, Sinauer Associates, Inc., Sunderland.

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Douglas J. Futuyma. Evolutionary Biology. Third edition. SUNY, Stony Brook. Sinauer. December 1998.

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Futuyma, D. J. (1998). Evolutionary biology. Sinauer Associates, Inc., Sunderland, USA.

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Douglas J. Futuyma. Evolutionary Biology. Sinauer Associates, Sunderland, MA, USA, 3rd edition, 1998.

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D. J. Futuyma. Evolutionary Biology. Sinauer Associates, Sunderland, MA, USA, 3rd edition, 1998.

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Douglas J. Futuyma. Evolutionary Biology. Sinauer, Sunderland, MA, USA, third edition, 1998.

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D. J. Futuyma. Evolutionary Biology. Sinauer Associates, Inc., 1986.

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Futuyma, Douglas J. 1998. Evolutionary Biology. Sunderland: Sinauer Associates.

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Futuyma, D.J. (1986) Evolutionary Biology, Sinauer Associates

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Douglas J. Futuyma, Evolutionary Biology (1986).

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