Strains of Salmonella typhimurium and Other
... Strain LT2 has proven to be suitable for use as a representative of the wild type of S. typhimurium. It is prototrophic, growing well, though less rapidly than on rich medium, on defined medium with ammonia as nitrogen source and with its carbon and energy needs satisfied by glucose, glycerol, and v ...
... Strain LT2 has proven to be suitable for use as a representative of the wild type of S. typhimurium. It is prototrophic, growing well, though less rapidly than on rich medium, on defined medium with ammonia as nitrogen source and with its carbon and energy needs satisfied by glucose, glycerol, and v ...
Mapping Quantitative Trait Loci in Multiple Populations of
... mapping population by permuting the trait data over individuals while holding the marker data fixed. One thousand iterations provided a null distribution, from which a 95% significance threshold was attained. Mapping was conducted via an iterative method. Interval mapping was performed first to iden ...
... mapping population by permuting the trait data over individuals while holding the marker data fixed. One thousand iterations provided a null distribution, from which a 95% significance threshold was attained. Mapping was conducted via an iterative method. Interval mapping was performed first to iden ...
Epigenetic Inheritance and Its Role in Evolutionary Biology: Re
... in evolutionary biology. 3. A Survey of Epigenetic Research Papers: Methodology As indicated above, various researchers use the word “epigenetics” and its derivatives in a wide variety of ways. The use of the word “epigenetic(s)” was probed by analyzing published papers in the PubMed database. Maint ...
... in evolutionary biology. 3. A Survey of Epigenetic Research Papers: Methodology As indicated above, various researchers use the word “epigenetics” and its derivatives in a wide variety of ways. The use of the word “epigenetic(s)” was probed by analyzing published papers in the PubMed database. Maint ...
W. Ford Doolittle - of Maureen A. O`Malley
... thinking, including his groundbreaking work on selfish DNA, and some early collaboration with Arlin Stoltzfus, who put these discussions into print as the theory of constructive neutral evolution.26 The “selfish gene” paper Doolittle wrote with graduate student ...
... thinking, including his groundbreaking work on selfish DNA, and some early collaboration with Arlin Stoltzfus, who put these discussions into print as the theory of constructive neutral evolution.26 The “selfish gene” paper Doolittle wrote with graduate student ...
Comparative gene mapping in Arabidopsis lyrata chromosomes 6
... for male and female meioses, because only 99 progeny were available in our mapping family, from both reciprocal crosses (see above). Mapping was done using JoinMap software 3.0 (van Ooijen & Voorrips, 2001). The map presented in Fig. 1 is the most parsimonious map constructed with the JoinMap proced ...
... for male and female meioses, because only 99 progeny were available in our mapping family, from both reciprocal crosses (see above). Mapping was done using JoinMap software 3.0 (van Ooijen & Voorrips, 2001). The map presented in Fig. 1 is the most parsimonious map constructed with the JoinMap proced ...
Biology_EOCEP_Review_-_Student_Copy
... Question Ethel decided to just test the amount of sunlight on the number of leaves. Her hypothesis was: If flowers are given 12 hours of sunlight a day, then they will have less leaves. ...
... Question Ethel decided to just test the amount of sunlight on the number of leaves. Her hypothesis was: If flowers are given 12 hours of sunlight a day, then they will have less leaves. ...
Non-conflict theories for the evolution of genomic imprinting
... example, in their single-locus model (in which offspring fitness was greatest for those expressing the same allele as their homozygous mother) they found that increasingly biased maternal expression would increase the mean fitness of a population. These authors then argued that this directional bias ...
... example, in their single-locus model (in which offspring fitness was greatest for those expressing the same allele as their homozygous mother) they found that increasingly biased maternal expression would increase the mean fitness of a population. These authors then argued that this directional bias ...
Do universal codon-usage patterns minimize the effects of mutation
... about 70% of the total error value, the first codon position another 29%, and the third codon position less than 1%. To highlight possible changes in code-error value along the three compositional axes, which are difficult to see in the simplex, we plotted code-error value versus composition along e ...
... about 70% of the total error value, the first codon position another 29%, and the third codon position less than 1%. To highlight possible changes in code-error value along the three compositional axes, which are difficult to see in the simplex, we plotted code-error value versus composition along e ...
Phylogenetic studies on the bacterial phylum`Verrucomicrobia`
... of cultured species. A number of molecular phylogenetic approaches and culture-independent studies based on 16S rRNA gene sequences (Hugenholtz et al., 1998; O’ Farrell & Janssen, 1999; Rappé & Giovannoni, 2003) revealed that the members of this phylogenetic group have been detected in a very wide r ...
... of cultured species. A number of molecular phylogenetic approaches and culture-independent studies based on 16S rRNA gene sequences (Hugenholtz et al., 1998; O’ Farrell & Janssen, 1999; Rappé & Giovannoni, 2003) revealed that the members of this phylogenetic group have been detected in a very wide r ...
The Persistence of the RA Fisher−Sewall Wright - Philsci
... We evaluate Sewall Wright’s three phase “shifting balance” theory of evolution, examining both the theoretical issues and the relevant data from nature and the laboratory. We conclude that while phases I and II of Wright’s theory (the movement of populations from one “adaptive peak” to another via d ...
... We evaluate Sewall Wright’s three phase “shifting balance” theory of evolution, examining both the theoretical issues and the relevant data from nature and the laboratory. We conclude that while phases I and II of Wright’s theory (the movement of populations from one “adaptive peak” to another via d ...
Shoaling in zebrafish: what we don`t know
... that differ in some dimension of interest. The most common paradigm used involves dividing a tank into three sections separated by transparent barriers. The test fish is placed in the central compartment and different shoals (or video stimuli) are presented in the two side compartments. The amount o ...
... that differ in some dimension of interest. The most common paradigm used involves dividing a tank into three sections separated by transparent barriers. The test fish is placed in the central compartment and different shoals (or video stimuli) are presented in the two side compartments. The amount o ...
Complex inheritance of larval adaptation in Plutella
... derived from intrastrain single pair matings to reduce the genetic heterogeneity within subsequent backcrosses. This strategy was used instead of inbreeding parental lines, to avoid inbreeding depression known to cause severe effects (infertility, inviability, and so on) in Lepidoptera (for example, ...
... derived from intrastrain single pair matings to reduce the genetic heterogeneity within subsequent backcrosses. This strategy was used instead of inbreeding parental lines, to avoid inbreeding depression known to cause severe effects (infertility, inviability, and so on) in Lepidoptera (for example, ...
The Use of Benlate for Distinguishing Between Haploid and Diploid
... For accurate deductions to be drawn from the results of a parasexual analysis it is mportant to distinguish between the three classes of stable segregants, namely haploids, non-disjunctional diploids and cross-over diploids. With the well analysed Aspergillus nidulans this is not too difficult if on ...
... For accurate deductions to be drawn from the results of a parasexual analysis it is mportant to distinguish between the three classes of stable segregants, namely haploids, non-disjunctional diploids and cross-over diploids. With the well analysed Aspergillus nidulans this is not too difficult if on ...
The Use of Benlate for Distinguishing Between Haploid and Diploid
... For accurate deductions to be drawn from the results of a parasexual analysis it is mportant to distinguish between the three classes of stable segregants, namely haploids, non-disjunctional diploids and cross-over diploids. With the well analysed Aspergillus nidulans this is not too difficult if on ...
... For accurate deductions to be drawn from the results of a parasexual analysis it is mportant to distinguish between the three classes of stable segregants, namely haploids, non-disjunctional diploids and cross-over diploids. With the well analysed Aspergillus nidulans this is not too difficult if on ...
genetics, experience, and host-plant preference in eurosta
... nonassortative mating that occurs when male gigantea mate with altissima females on S. altissima. This indicates assortative-mating mechanisms in addition to host-associated mating are required to produce the partial reproductive isolation between the host races that has been observed. Nongenetic fa ...
... nonassortative mating that occurs when male gigantea mate with altissima females on S. altissima. This indicates assortative-mating mechanisms in addition to host-associated mating are required to produce the partial reproductive isolation between the host races that has been observed. Nongenetic fa ...
Phenotypic diversity as an adaptation to environmental uncertainty
... combinations of the original fitness set, which considers only single phenotypes (Fig. 1). In mathematical terminology, the extended fitness set is the convex hull of the fitness set. Levins distinguishes two qualitatively different cases. Where trade-offs are weak, the extended fitness set does not ...
... combinations of the original fitness set, which considers only single phenotypes (Fig. 1). In mathematical terminology, the extended fitness set is the convex hull of the fitness set. Levins distinguishes two qualitatively different cases. Where trade-offs are weak, the extended fitness set does not ...
PDF
... for hearing studies at Johns Hopkins University in Baltimore, MD, with the approval of their respective Internal Animal Care and Use Committees. Both colonies were established from random-bred, short- and long-haired cats obtained from commercial vendors and were maintained as closed colonies throug ...
... for hearing studies at Johns Hopkins University in Baltimore, MD, with the approval of their respective Internal Animal Care and Use Committees. Both colonies were established from random-bred, short- and long-haired cats obtained from commercial vendors and were maintained as closed colonies throug ...
Harvey ras (H-ras) Point Mutations Are Induced by 4
... gosity occurred in 5 of 14 invasive cancers. Larger invasive squamous cell carcinomas consistently lost the wild-type allele, whereas preneoplastic lesions and small tumors were heterozygous for ma. This suggests a causal ...
... gosity occurred in 5 of 14 invasive cancers. Larger invasive squamous cell carcinomas consistently lost the wild-type allele, whereas preneoplastic lesions and small tumors were heterozygous for ma. This suggests a causal ...
Biopsychology, 7e (Pinel) - College Test bank
... A) natural selection. D) domestication. B) gene splicing. E) euthanasia. C) selective breeding. Answer: C Diff: 1 Page Ref: 25 Topic: 2.2 Human Evolution 18) Fitness in the Darwinian sense refers to an organism’s ability to A) survive and contribute large numbers of fertile offspring to the next gen ...
... A) natural selection. D) domestication. B) gene splicing. E) euthanasia. C) selective breeding. Answer: C Diff: 1 Page Ref: 25 Topic: 2.2 Human Evolution 18) Fitness in the Darwinian sense refers to an organism’s ability to A) survive and contribute large numbers of fertile offspring to the next gen ...
Sporulation in BhciZZus subtilis 168. Control of
... temperature with a solution of p-nitrophenyl phosphate (15mg/ml in I -0M-diethanolamineHCI buffer, pH 10.0).Colonies with low alkaline phosphatase activity remained white, while normal colonies immediately turned a bright yellow. The white colonies were picked, streaked on glucose-glutamate minimal ...
... temperature with a solution of p-nitrophenyl phosphate (15mg/ml in I -0M-diethanolamineHCI buffer, pH 10.0).Colonies with low alkaline phosphatase activity remained white, while normal colonies immediately turned a bright yellow. The white colonies were picked, streaked on glucose-glutamate minimal ...
Here - Semantic Scholar
... The zygotes AA and aa are called homozygous, since they carry two copies of the same allele. In this case, simple Mendelian inheritance means that there is no chance involved as to what genetic information will be inherited in the next generation; i.e., AA will pass on the allele A and aa will pass ...
... The zygotes AA and aa are called homozygous, since they carry two copies of the same allele. In this case, simple Mendelian inheritance means that there is no chance involved as to what genetic information will be inherited in the next generation; i.e., AA will pass on the allele A and aa will pass ...
Population Differences in the Polyalanine Domain and 6
... no abnormal magnetic resonance imaging findings) almost identical to that of her brother (sacral dimple with a bony outgrowth and no abnormal magnetic resonance imaging findings). Chromosomal microdeletions affecting the HLXB9 gene, which have been described in some Currarino patients (4 ), can be d ...
... no abnormal magnetic resonance imaging findings) almost identical to that of her brother (sacral dimple with a bony outgrowth and no abnormal magnetic resonance imaging findings). Chromosomal microdeletions affecting the HLXB9 gene, which have been described in some Currarino patients (4 ), can be d ...
The Biology of Marine Mammals
... name is the one that counts even if that name, like in the case of Basilosaurus, is totally misleading about the nature of the animal being named. Also, some of the scientific names are based on native vernacular names such as Inia (Guarayu of Bolivia) for the boto or Amazonian freshwater dolphin, S ...
... name is the one that counts even if that name, like in the case of Basilosaurus, is totally misleading about the nature of the animal being named. Also, some of the scientific names are based on native vernacular names such as Inia (Guarayu of Bolivia) for the boto or Amazonian freshwater dolphin, S ...
PerfectBabyFullText
... wedding magazines, an icon to which virtually no one lives up. The perfect day is a picture that sells beer and cigarettes. And the perfect baby is becoming a subtle commercialization of the same ideal traits that shaped eugenics at the turn of the century. Biotechnolology companies rush ahead full ...
... wedding magazines, an icon to which virtually no one lives up. The perfect day is a picture that sells beer and cigarettes. And the perfect baby is becoming a subtle commercialization of the same ideal traits that shaped eugenics at the turn of the century. Biotechnolology companies rush ahead full ...
Koinophilia
Koinophilia is an evolutionary hypothesis concerning sexual selection which proposes that animals seeking mate preferentially choose individuals with a minimum of unusual features. Koinophilia intends to explain the clustering of organisms into species and other issues described by Darwin's Dilemma. The term derives from the Greek, koinos, ""the usual"", and philos, ""fondness"".Natural selection causes beneficial inherited features to become more common and eventually replace their disadvantageous counterparts. A sexually-reproducing animal would be expected to avoid individuals with unusual features, and to prefer to mate with individuals displaying a predominance of common or average features. This means that mates displaying mutant features are also avoided. This is advantageous because most mutations that manifest themselves as changes in appearance, functionality or behavior, are disadvantageous. Because it is impossible to judge whether a new mutation is beneficial or not, koinophilic animals avoid them all, at the cost of avoiding the occasional beneficial mutation. Thus, koinophilia, although not infallible in its ability to distinguish fit from unfit mates, is a good strategy when choosing a mate. A koinophilic choice ensures that offspring are likely to inherit features that have been successful in the past.Koinophilia differs from assortative mating, where ""like prefers like"". If like preferred like, leucistic animals (such as white peacocks) would be sexually attracted to one another, and a leucistic subspecies would come into being. Koinophilia predicts that this is unlikely because leucistic animals are attracted to the average in the same way as other animals. Since non-leucistic animals are not attracted by leucism, few leucistic individuals find mates, and leucistic lineages will rarely form.Koinophilia provides simple explanations for the rarity of speciation (in particular Darwin's Dilemma), evolutionary stasis, punctuated equilibria, and the evolution of cooperation. Koinophilia might also contribute to the maintenance of sexual reproduction, preventing its reversion to the much simpler and inherently more advantageous asexual form of reproduction.The koinophilia hypothesis is supported by research into the physical attractiveness of human faces by Judith Langlois and her co-workers. They found that the average of two human faces was more attractive than either of the faces from which that average was derived. The more faces (of the same gender and age) that were used in the averaging process the more attractive and appealing the average face became. This work into averageness supports koinophilia as an explanation of what constitutes a beautiful face, and how the individuality of a face is recognized.