An investigation of sympatric speciation in diploid organisms by
... Simulations demonstrated that sympatric speciation can occur in scenarios based on the DobzhanskyMüller model and that these processes can be facilitated by the intervention of selective predators. ...
... Simulations demonstrated that sympatric speciation can occur in scenarios based on the DobzhanskyMüller model and that these processes can be facilitated by the intervention of selective predators. ...
THE GENETICS OF CURLY WING IN DROSOPHILA. ANOTHER
... female which is homozygous for the first-chromosome characters, scute, echinus, cut, vermilion, garnet and forked. Here also the curly is found to be present in half of the F1 males which all show the above six recessive first-chromosome characters.Curlythereforeexhibitscompleteindependence of the f ...
... female which is homozygous for the first-chromosome characters, scute, echinus, cut, vermilion, garnet and forked. Here also the curly is found to be present in half of the F1 males which all show the above six recessive first-chromosome characters.Curlythereforeexhibitscompleteindependence of the f ...
Modular Skeletal Evolution in Sticklebacks Is Controlled by Additive
... Fishman et al. 2013). Alternatively, trait clusters could result from tightly linked loci or pleiotropic effects of individual genes (Mallet 1989; Studer and Doebley 2011). Having ...
... Fishman et al. 2013). Alternatively, trait clusters could result from tightly linked loci or pleiotropic effects of individual genes (Mallet 1989; Studer and Doebley 2011). Having ...
Selective Crossover Using Gene Dominance as an Adaptive
... “In the struggle for survival, the fittest win out at the expense of their rivals because they succeed in adapting themselves best to their environment.” Darwin, Charles Robert ...
... “In the struggle for survival, the fittest win out at the expense of their rivals because they succeed in adapting themselves best to their environment.” Darwin, Charles Robert ...
Fulltext PDF - Indian Academy of Sciences
... to this topic: researchers concluded that only homozygous CYP2C19*17/*17 could be considered UMs and that they are likely at an increased risk to suffer therapeutic ineffectiveness, principally for drugs with a very narrow therapeutic window, such as Clopidogrel (Li-Wan-Po et al. 2009). We were able ...
... to this topic: researchers concluded that only homozygous CYP2C19*17/*17 could be considered UMs and that they are likely at an increased risk to suffer therapeutic ineffectiveness, principally for drugs with a very narrow therapeutic window, such as Clopidogrel (Li-Wan-Po et al. 2009). We were able ...
How to Model Microevolution How to Model Microevolution
... D, “linkage disequilibrium” • It measures the degree of association at the population level between the two sites/loci • D is created by many evolutionary forces and historical events, including the very act of mutation because the new mutant variant initially exists on only one chromosomal backgrou ...
... D, “linkage disequilibrium” • It measures the degree of association at the population level between the two sites/loci • D is created by many evolutionary forces and historical events, including the very act of mutation because the new mutant variant initially exists on only one chromosomal backgrou ...
Dominant and Recessive Inheritance Patterns of
... individuals found in the northern population. Reciprocal crosses and backcrosses indicated that the nondiapause phenotype in the snd was inherited in a recessive manner, and a single locus is responsible for the nondiapause phenotype. Ignatowicz and Helle (1986) and Goka and Takafuji (1990) also rep ...
... individuals found in the northern population. Reciprocal crosses and backcrosses indicated that the nondiapause phenotype in the snd was inherited in a recessive manner, and a single locus is responsible for the nondiapause phenotype. Ignatowicz and Helle (1986) and Goka and Takafuji (1990) also rep ...
Charles Darwin Meets Amoeba economicus: Why Natural Selection
... of “natural selection,” on the other hand, usually conjures the discipline of evolutionary biology. Thus, both terms are seen as being distinctly separate. This is a mistake. As detailed elsewhere [Khalil, 2007e], biologists use, without explicitly stating so, the concept of rationality when they di ...
... of “natural selection,” on the other hand, usually conjures the discipline of evolutionary biology. Thus, both terms are seen as being distinctly separate. This is a mistake. As detailed elsewhere [Khalil, 2007e], biologists use, without explicitly stating so, the concept of rationality when they di ...
Pest Control by the Introduction of a Conditional Lethal Trait on
... advance of gene technology, a release involving 10 Ð20 loci is conceivable. The multilocus problem is simple if the loci are in equilibrium. In this case the loci are in random association and gamete frequencies are simply the product of gene frequencies across loci. However, we are interested in th ...
... advance of gene technology, a release involving 10 Ð20 loci is conceivable. The multilocus problem is simple if the loci are in equilibrium. In this case the loci are in random association and gamete frequencies are simply the product of gene frequencies across loci. However, we are interested in th ...
The Influence of Anticodon–Codon Interactions and Modified Bases
... occurs in some mitochondria. Therefore, our figure 1c includes all these cases. This means that more than one tRNA can translate most codons, and the total rate of translation of each codon is dependent on the sum of the rates at which all tRNA types translate the codon. This is an important part of ...
... occurs in some mitochondria. Therefore, our figure 1c includes all these cases. This means that more than one tRNA can translate most codons, and the total rate of translation of each codon is dependent on the sum of the rates at which all tRNA types translate the codon. This is an important part of ...
The female-killing chromosome of the silkworm, Bombyx mori, was
... feminizing gene (Fem) on the W chromosome. The paternally transmitted mutant W chromosome, Df(pSa+pW+od)Fem, derived from the translocation-carrying W chromosome (pSa+pW+od), is inert as femaleness determinant. Moreover, this Df(pSa+pW+od)Fem chromosome has been thought to have a female-killing fact ...
... feminizing gene (Fem) on the W chromosome. The paternally transmitted mutant W chromosome, Df(pSa+pW+od)Fem, derived from the translocation-carrying W chromosome (pSa+pW+od), is inert as femaleness determinant. Moreover, this Df(pSa+pW+od)Fem chromosome has been thought to have a female-killing fact ...
Textbook Animal Breeding and Genetics
... potential, determine what proportion you should use for breeding in order to achieve a certain genetic gain in the next generation, select the animals and mate them, and after producing the offspring evaluate whether what you set out to achieve with your breeding decisions actually happened. Each ge ...
... potential, determine what proportion you should use for breeding in order to achieve a certain genetic gain in the next generation, select the animals and mate them, and after producing the offspring evaluate whether what you set out to achieve with your breeding decisions actually happened. Each ge ...
Textbook animal breeding Animal breeding and genetics for
... potential, determine what proportion you should use for breeding in order to achieve a certain genetic gain in the next generation, select the animals and mate them, and after producing the offspring evaluate whether what you set out to achieve with your breeding decisions actually happened. Each ge ...
... potential, determine what proportion you should use for breeding in order to achieve a certain genetic gain in the next generation, select the animals and mate them, and after producing the offspring evaluate whether what you set out to achieve with your breeding decisions actually happened. Each ge ...
TRANSLOCATIONS INVOLVING T H E THIRD AND THE FOURTH
... the third chromosome, one fragment being attached to the fourthchromosome. These gametes carry, therefore, the gene D and the normal allelomorph of ev. The other kind of gametes contains the normal (that is, the unbroken) third chromosome andthe free fourth chromosome. These gametes carry ey but do ...
... the third chromosome, one fragment being attached to the fourthchromosome. These gametes carry, therefore, the gene D and the normal allelomorph of ev. The other kind of gametes contains the normal (that is, the unbroken) third chromosome andthe free fourth chromosome. These gametes carry ey but do ...
PPT
... So diploid with this gene from the pathogenic strain grows BETTER at From lab strain QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. high T. ...
... So diploid with this gene from the pathogenic strain grows BETTER at From lab strain QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. high T. ...
Chromosome Variation
... only horse chromosomes from his mother. Additional reports of fertile female mules support the idea that their offspring inherit only horse chromosomes from their mother. When the father of a mule’s offspring is a horse, the offspring is horselike in appearance, because it apparently inherits horse ...
... only horse chromosomes from his mother. Additional reports of fertile female mules support the idea that their offspring inherit only horse chromosomes from their mother. When the father of a mule’s offspring is a horse, the offspring is horselike in appearance, because it apparently inherits horse ...
Selective breeding programmes for medium
... improve quantitative phenotypes (phenotypes such as length). Chapter 5 outlines simple selective breeding programmes that can be conducted to improve growth rate and other quantitative phenotypes, and provides examples of the types of data that must be recorded and data tables that can be used to re ...
... improve quantitative phenotypes (phenotypes such as length). Chapter 5 outlines simple selective breeding programmes that can be conducted to improve growth rate and other quantitative phenotypes, and provides examples of the types of data that must be recorded and data tables that can be used to re ...
Fulltext PDF - Indian Academy of Sciences
... stambh A locus of Drosophila melanogaster. stmA is localized to polytene bands 44D1.2 on 2R. stmA mutations are of two types: temperature-sensitive (ts) adult and larval paralytic or unconditional embryonic or larval lethal. Twelve alleles reported in this study fall into two intragenic complementin ...
... stambh A locus of Drosophila melanogaster. stmA is localized to polytene bands 44D1.2 on 2R. stmA mutations are of two types: temperature-sensitive (ts) adult and larval paralytic or unconditional embryonic or larval lethal. Twelve alleles reported in this study fall into two intragenic complementin ...
Genetic aspects in sarcoidosis REVIEW M. Luisetti*, A. Beretta*, L. Casali*
... addition, percentage of cases in subjects of Manx ancestry was higher than expected. Besides inorganic or organic pollutants, many infectious agents including viruses, Borrelia burgdorferi, Propionibacterium acnes, mycobacteria, and mycoplasma have been suspected to be able to elicit the granulomato ...
... addition, percentage of cases in subjects of Manx ancestry was higher than expected. Besides inorganic or organic pollutants, many infectious agents including viruses, Borrelia burgdorferi, Propionibacterium acnes, mycobacteria, and mycoplasma have been suspected to be able to elicit the granulomato ...
Direct fitness or inclusive fitness: How shall we model kin selection?
... In our experience, the difficulties that often arise in the formulation of inclusive and direct fitness arguments, and in their comparison, have to do with the wide range of notations and assumptions found in the literature, and it seems to us that there is a real need for a simple general scheme an ...
... In our experience, the difficulties that often arise in the formulation of inclusive and direct fitness arguments, and in their comparison, have to do with the wide range of notations and assumptions found in the literature, and it seems to us that there is a real need for a simple general scheme an ...
The effect of inbreeding rate on fitness, inbreeding depression and
... The detrimental effects of inbreeding and genetic drift in small populations can be alleviated by mating between individuals from genetically differentiated populations (hybridization; Hedrick et al. 2011). Heterosis, the increased fitness of hybrid offspring, is generally attributed to the masking ...
... The detrimental effects of inbreeding and genetic drift in small populations can be alleviated by mating between individuals from genetically differentiated populations (hybridization; Hedrick et al. 2011). Heterosis, the increased fitness of hybrid offspring, is generally attributed to the masking ...
Mapping Polygenes - University of Warwick
... recombinant inbred populations (derived by inbreeding F2 progeny until they become virtually homozygous lines by selfing or sibbing) have also been used (9, 57). While the latter case has less linkage disequilibrium, due to more opportunity for meiotic recombination, it has the advantage of homozygo ...
... recombinant inbred populations (derived by inbreeding F2 progeny until they become virtually homozygous lines by selfing or sibbing) have also been used (9, 57). While the latter case has less linkage disequilibrium, due to more opportunity for meiotic recombination, it has the advantage of homozygo ...
Genetic Algorithms and their Application to the Artificial Evol
... There is differential reproduction phenotypes better adapted to the environment are likely to produce more offspring Slightly unfaithful reproduction creates genotypic variations affect traits of the phenotype, which in turn affect fitness These genotypic variations are heritable ...
... There is differential reproduction phenotypes better adapted to the environment are likely to produce more offspring Slightly unfaithful reproduction creates genotypic variations affect traits of the phenotype, which in turn affect fitness These genotypic variations are heritable ...
Polymorphism (biology)
Polymorphism in biology is said to occur when two or more clearly different phenotypes exist in the same population of a species—in other words, the occurrence of more than one form or morph. In order to be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating).Polymorphism as described here involves morphs of the phenotype. The term is also used somewhat differently by molecular biologists to describe certain point mutations in the genotype, such as SNPs (see also RFLPs). This usage is not discussed in this article.Polymorphism is common in nature; it is related to biodiversity, genetic variation and adaptation; it usually functions to retain variety of form in a population living in a varied environment. The most common example is sexual dimorphism, which occurs in many organisms. Other examples are mimetic forms of butterflies (see mimicry), and human hemoglobin and blood types.According to the theory of evolution, polymorphism results from evolutionary processes, as does any aspect of a species. It is heritable and is modified by natural selection. In polyphenism, an individual's genetic make-up allows for different morphs, and the switch mechanism that determines which morph is shown is environmental. In genetic polymorphism, the genetic make-up determines the morph. Ants exhibit both types in a single population.Polymorphism also refers to the occurrence of structurally and functionally more than two different types of individuals, called zooids within the same organism. It is a characteristic feature of Cnidarians.For example, in Obelia there are feeding individuals, the gastrozooids; the individuals capable of asexual reproduction only, the gonozooids, blastostyles and free-living or sexually reproducing individuals, the medusae.