ppt
... - This quantifies the evolutionarily important genetic variance (heritability is also V(add)/V(phen), remember)? - So, through a series of selection experiments, we can determine how responsive a trait is to selective pressure. As selection proceeds, most variation is environmental or dominance and ...
... - This quantifies the evolutionarily important genetic variance (heritability is also V(add)/V(phen), remember)? - So, through a series of selection experiments, we can determine how responsive a trait is to selective pressure. As selection proceeds, most variation is environmental or dominance and ...
An Inclusive Fitness Model for Dispersal of Offspring 1. Introduction
... each of her patch mates (which may have been altered by her own mutant behaviour). Her inclusive fitness increment A W is her own fitness change plus the sum o f the fitness changes of each of her neighbours, each of these weighted by the coefficient of relatedness of that neighbour to the mutant in ...
... each of her patch mates (which may have been altered by her own mutant behaviour). Her inclusive fitness increment A W is her own fitness change plus the sum o f the fitness changes of each of her neighbours, each of these weighted by the coefficient of relatedness of that neighbour to the mutant in ...
wsp Gene Sequences from the Wolbachia of Filarial Nematodes
... The PCR products obtained with primers WSPintF and WSPintR from nematode Wolbachia were sequenced directly, and the sequences were aligned to the wsp gene available for arthropod Wolbachia. We also tried to align wsp to the gene sequences available for the major outer membrane proteins of Anaplasma, ...
... The PCR products obtained with primers WSPintF and WSPintR from nematode Wolbachia were sequenced directly, and the sequences were aligned to the wsp gene available for arthropod Wolbachia. We also tried to align wsp to the gene sequences available for the major outer membrane proteins of Anaplasma, ...
Reproduction - Male
... *This figures depend upon the overall health and freedom from disease and parasites as well as nutrition of the individual. ...
... *This figures depend upon the overall health and freedom from disease and parasites as well as nutrition of the individual. ...
Novel mutants of 23S RNA: characterization of
... double mutant ribosomes U1067/C2505 and U1067/C2583 was in both strains dependent on Mg 2+ concentration: at 25 mM the resistance was nearly 2 times higher than at 10 mM (Table I)It is clear from table I that in all cases the resistance to thiostrepton was higher on the ribosomes derived from E.coli ...
... double mutant ribosomes U1067/C2505 and U1067/C2583 was in both strains dependent on Mg 2+ concentration: at 25 mM the resistance was nearly 2 times higher than at 10 mM (Table I)It is clear from table I that in all cases the resistance to thiostrepton was higher on the ribosomes derived from E.coli ...
Document
... • Individuals with certain heritable characteristics survive and reproduce at a higher rate than other individuals • Natural selection increases the adaptation of organisms to their environment over time • If an environment changes over time, natural selection may result in adaptation to these new c ...
... • Individuals with certain heritable characteristics survive and reproduce at a higher rate than other individuals • Natural selection increases the adaptation of organisms to their environment over time • If an environment changes over time, natural selection may result in adaptation to these new c ...
Meta-analysis of phenotypic selection on flowering phenology
... selective neutrality, and has implications for the evolution of temperate floras under global climate change. Keywords Flowering phenology, flowering synchrony, flowering time, mutualisms, natural selection, phenotypic selection. Ecology Letters (2011) ...
... selective neutrality, and has implications for the evolution of temperate floras under global climate change. Keywords Flowering phenology, flowering synchrony, flowering time, mutualisms, natural selection, phenotypic selection. Ecology Letters (2011) ...
1 Frequency-dependent selection and the evolution of assortative
... Understanding the conditions that give rise to new species is one of the oldest and most intriguing questions in evolutionary biology (DARWIN 1859). There is a general consensus that spatially separated populations can diverge through time to the point where previously separated individuals become u ...
... Understanding the conditions that give rise to new species is one of the oldest and most intriguing questions in evolutionary biology (DARWIN 1859). There is a general consensus that spatially separated populations can diverge through time to the point where previously separated individuals become u ...
Structural changes following the reversal of a Y chromosome to an
... (TCONS_00043496 and TCONS_00043497 in our annotation) is a parental copy of an ancestral Y-linked gene—Polycystein-related Y, or PRY. In D. pseudoobscura, PRY is on chromosome XL and has testis-specific expression (Fig S3). No substitutions differentiate the two duplicates of CG30048. While one copy ...
... (TCONS_00043496 and TCONS_00043497 in our annotation) is a parental copy of an ancestral Y-linked gene—Polycystein-related Y, or PRY. In D. pseudoobscura, PRY is on chromosome XL and has testis-specific expression (Fig S3). No substitutions differentiate the two duplicates of CG30048. While one copy ...
"Antibiotics and the Evolution of Antibiotic Resistance". In
... the most important human intervention in the microbiosphere and one of the few processes of evolution that can be addressed in real time. Antibiotics are used for preventing and treating infections in humans, animals and plants, as well as for promoting animal growth. This has produced the release i ...
... the most important human intervention in the microbiosphere and one of the few processes of evolution that can be addressed in real time. Antibiotics are used for preventing and treating infections in humans, animals and plants, as well as for promoting animal growth. This has produced the release i ...
21 “Most asked” questions about White Lions answered!
... there have now been several occurrences of White Lions over an extensive area, proving the conservation value of this rare phenotype to the biodiversity of this wilderness region. Q4: Once the genetic marker is known, how can this research protect the White Lions? Turner: In 2013, after a 7 year stu ...
... there have now been several occurrences of White Lions over an extensive area, proving the conservation value of this rare phenotype to the biodiversity of this wilderness region. Q4: Once the genetic marker is known, how can this research protect the White Lions? Turner: In 2013, after a 7 year stu ...
The environment and the genotype in
... the same genome, is no less striking than the production of winged or wingless aphids from similar genetic material, or the production of tasters and non-tasters from dissimilar genetic material. Evolutionary explanations of genetically determined polymorphisms are numerous. Ford and others have bee ...
... the same genome, is no less striking than the production of winged or wingless aphids from similar genetic material, or the production of tasters and non-tasters from dissimilar genetic material. Evolutionary explanations of genetically determined polymorphisms are numerous. Ford and others have bee ...
Evolutionary consequences of Wolbachia infections
... aberrations of oogenesis, were rescued by Wolbachia. This study is complemented by the study of Dedeine et al. [16], which indicated Wolbachia is essential for oogenesis in the parasitoid wasp Asobara tabida. Collectively, they indicate that the influence of Wolbachia in processes of female sexual d ...
... aberrations of oogenesis, were rescued by Wolbachia. This study is complemented by the study of Dedeine et al. [16], which indicated Wolbachia is essential for oogenesis in the parasitoid wasp Asobara tabida. Collectively, they indicate that the influence of Wolbachia in processes of female sexual d ...
Document
... In human infants, lactase is secreted in intestine which breaks the lactose into easily absorbed Glucose and Galactose. Production of the lactase enzyme declines in adults. The unabsorbed lactose creates cramps, diarrhea, and nausea. In some humans, lactase continues to be produced throughout adulth ...
... In human infants, lactase is secreted in intestine which breaks the lactose into easily absorbed Glucose and Galactose. Production of the lactase enzyme declines in adults. The unabsorbed lactose creates cramps, diarrhea, and nausea. In some humans, lactase continues to be produced throughout adulth ...
Safety Administration Implementation Regulation on Agricultural
... 1.The genetic engineered organism obtained from recipient organism of Safety Class III via Type 1 genetic manipulations belongs to Safety Classes I, II and III on the basis of the extent of safety increase, with the same classification standard as that of the recipient organisms. 2.The genetic engin ...
... 1.The genetic engineered organism obtained from recipient organism of Safety Class III via Type 1 genetic manipulations belongs to Safety Classes I, II and III on the basis of the extent of safety increase, with the same classification standard as that of the recipient organisms. 2.The genetic engin ...
PC_Biology_Macomb_April08
... Students will understand the nature of science and demonstrate an ability to practice scientific reasoning by applying it to the design, execution, and evaluation of scientific investigations. Students will demonstrate their understanding that scientific knowledge is gathered through various forms o ...
... Students will understand the nature of science and demonstrate an ability to practice scientific reasoning by applying it to the design, execution, and evaluation of scientific investigations. Students will demonstrate their understanding that scientific knowledge is gathered through various forms o ...
Genes and Genetic Testing in Hereditary Ataxias
... typically three to six bases long, appear at variable repeat number within many genes. Occasionally these repeat regions become unstable during replication, leading to either deletions of repeats, which rarely causes problems, or to expansion of the number of repeats. Typically within a repeat regio ...
... typically three to six bases long, appear at variable repeat number within many genes. Occasionally these repeat regions become unstable during replication, leading to either deletions of repeats, which rarely causes problems, or to expansion of the number of repeats. Typically within a repeat regio ...
Linking genetic change to community evolution:
... Microbial communities have several advantages as model systems for studying ecology and evolution. Most microbes that are routinely grown in the laboratory have short generation times and are easily maintained in large populations, allowing rapid evolutionary change and the opportunity to study comm ...
... Microbial communities have several advantages as model systems for studying ecology and evolution. Most microbes that are routinely grown in the laboratory have short generation times and are easily maintained in large populations, allowing rapid evolutionary change and the opportunity to study comm ...
An Introduction to Genetic Analysis Chapter 18 Chromosome
... arise naturally as spontaneous chromosomal mutations and, as such, they must be considered aberrations because they differ from the previous norm. However, many species of plants and animals have clearly arisen through polyploidy, so evidently evolution can take advantage of polyploidy when it arise ...
... arise naturally as spontaneous chromosomal mutations and, as such, they must be considered aberrations because they differ from the previous norm. However, many species of plants and animals have clearly arisen through polyploidy, so evidently evolution can take advantage of polyploidy when it arise ...
Redalyc.Molecular Epidemiology and Evolution of Avian Infectious
... Mutation and recombination processes are involved in the genetic and phenotypic variations of RNA viruses, leading to the emergence of new variant strains, and give rise to virus population diversity to be modeled by the host, particularly by the immune system, as occurred with infectious bronchitis ...
... Mutation and recombination processes are involved in the genetic and phenotypic variations of RNA viruses, leading to the emergence of new variant strains, and give rise to virus population diversity to be modeled by the host, particularly by the immune system, as occurred with infectious bronchitis ...
Hereditary hemorrhagic telangiectasia: genetics and molecular
... 85% of cases submitted to clinical molecular genetics laboratories for clinical suspicion of HHT. Over 750 pathogenic ENG and ACVRL1 mutations have been described to date (HHT mutation databases1, 2 ). The HHT mutation database3 is the most comprehensive database for endoglin and ACVRL1 mutations de ...
... 85% of cases submitted to clinical molecular genetics laboratories for clinical suspicion of HHT. Over 750 pathogenic ENG and ACVRL1 mutations have been described to date (HHT mutation databases1, 2 ). The HHT mutation database3 is the most comprehensive database for endoglin and ACVRL1 mutations de ...
quant - eweb.furman.edu
... - This quantifies the evolutionarily important genetic variance (heritability is also V(add)/V(phen), remember)? - So, through a series of selection experiments, we can determine how responsive a trait is to selective pressure. As selection proceeds, most variation is environmental or dominance and ...
... - This quantifies the evolutionarily important genetic variance (heritability is also V(add)/V(phen), remember)? - So, through a series of selection experiments, we can determine how responsive a trait is to selective pressure. As selection proceeds, most variation is environmental or dominance and ...
Frequent, independent transfers of a catabolic gene from bacteria to
... can be achieved by modifying their genetic repertoire to acquire new functions. Indeed, gene duplications (followed by evolution of new functions) and other genomic rearrangements have shaped eukaryotic genomes [1]. However, genetic innovation can also result from the acquisition of exogenous genes ...
... can be achieved by modifying their genetic repertoire to acquire new functions. Indeed, gene duplications (followed by evolution of new functions) and other genomic rearrangements have shaped eukaryotic genomes [1]. However, genetic innovation can also result from the acquisition of exogenous genes ...
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.