reproduction - Teaching Biology Project
... if she accepts, they will mate Lorraine Kuun, July 2011 ...
... if she accepts, they will mate Lorraine Kuun, July 2011 ...
REPRODUCTION - Teaching Biology Project
... if she accepts, they will mate Lorraine Kuun, July 2011 ...
... if she accepts, they will mate Lorraine Kuun, July 2011 ...
#2
... human and chimpanzee, we aligned 14.3 Mb of orthologous noncoding DNA sequences from human, chimpanzee, and baboon (Methods). Subsequently, human chromosomes were split into 1 Mb non-overlapping windows (referred to as loci). We retained 36 loci dispersed over 12 autosomal chromosomes, each of which ...
... human and chimpanzee, we aligned 14.3 Mb of orthologous noncoding DNA sequences from human, chimpanzee, and baboon (Methods). Subsequently, human chromosomes were split into 1 Mb non-overlapping windows (referred to as loci). We retained 36 loci dispersed over 12 autosomal chromosomes, each of which ...
Investigation of Genes That May Be Required for the
... Despite its being a relatively simple organism, there is strong conservation of many genes between C. elegans and mammals. In fact, researchers have identified C. elegans homologues for 60-80% of human genes (Kaletta and Hengartner, 2006). The 959 somatic cells that make up the hermaphrodite form of ...
... Despite its being a relatively simple organism, there is strong conservation of many genes between C. elegans and mammals. In fact, researchers have identified C. elegans homologues for 60-80% of human genes (Kaletta and Hengartner, 2006). The 959 somatic cells that make up the hermaphrodite form of ...
Complex genetic background in a large family with Brugada syndrome
... characterized in cell lines expressing mutant Nav1.5 channel and have shown a loss-of-function effect on sodium current (The gene connection for the heart. http://triad. fsm.it/cardmoc/). However, it was found that some large BrS-affected families contained SCN5A-positive and SCN5A-negative family m ...
... characterized in cell lines expressing mutant Nav1.5 channel and have shown a loss-of-function effect on sodium current (The gene connection for the heart. http://triad. fsm.it/cardmoc/). However, it was found that some large BrS-affected families contained SCN5A-positive and SCN5A-negative family m ...
Surveying Saccharomyces Genomes to Identify Functional Elements
... organisms. We sought to gain experience with this by comparing the DNA sequences of yeasts of the Saccharomyces genus because (1) the complete Saccharomyces cerevisiae genome sequence is available for comparison (Goffeau et al. 1996); (2) the genomes of Saccharomyces species are relatively small, wi ...
... organisms. We sought to gain experience with this by comparing the DNA sequences of yeasts of the Saccharomyces genus because (1) the complete Saccharomyces cerevisiae genome sequence is available for comparison (Goffeau et al. 1996); (2) the genomes of Saccharomyces species are relatively small, wi ...
Supplementary Information (doc 94K)
... strategies for individualizing information sharing when working with families who have a child with a genetic condition. ...
... strategies for individualizing information sharing when working with families who have a child with a genetic condition. ...
ws: Bikini Bottom Genetics
... c. What are possible genotypes of the offspring they would produce? ___________________ d. What is the possible phenotypes of the offspring they would produce? ____________________ e. Did the hospital make a mistake? Explain your answer. ...
... c. What are possible genotypes of the offspring they would produce? ___________________ d. What is the possible phenotypes of the offspring they would produce? ____________________ e. Did the hospital make a mistake? Explain your answer. ...
Phylogenetic analysis of the insect order Odonata using 28S and
... set. This method can be effective when the partitioned components of the data set include phylogenetic signals consistent with each other, but there are two major conditions that violate this consistency. First, if different sources have not experienced a common lineage, the two data sets could have ...
... set. This method can be effective when the partitioned components of the data set include phylogenetic signals consistent with each other, but there are two major conditions that violate this consistency. First, if different sources have not experienced a common lineage, the two data sets could have ...
A NEW TAIL-SHORT MUTATION IN THE MOUSE
... it, apparently it was dominant. Male 289 was therefore either a heterozygote which failed to manifest the condition, or else a considerable fraction (8/128) of his gametes contained the mutation. The first alternative is made highly improbable by the fact that in a large population for five generati ...
... it, apparently it was dominant. Male 289 was therefore either a heterozygote which failed to manifest the condition, or else a considerable fraction (8/128) of his gametes contained the mutation. The first alternative is made highly improbable by the fact that in a large population for five generati ...
Evolutionary History and Adaptive Significance of Respiratory
... (Newell 1979). Most aquatic organisms use gills as the main site for gas exchange, and while gills function very well in water, they do not perform well when in air. The drop in gas exchange performance is primarily due to problems involved with preventing the collapse of the gills’ fine lamellar st ...
... (Newell 1979). Most aquatic organisms use gills as the main site for gas exchange, and while gills function very well in water, they do not perform well when in air. The drop in gas exchange performance is primarily due to problems involved with preventing the collapse of the gills’ fine lamellar st ...
Hybrid Sterility, Haldane`s Rule and Speciation in Heliconius cydno
... result from the production of normal but infertile eggs, production of small infertile eggs, or from a complete failure to develop ovarioles, which suggests multiple routes to the evolution of hybrid sterility in these Heliconius species. These results conform to the expectations of the “dominance” ...
... result from the production of normal but infertile eggs, production of small infertile eggs, or from a complete failure to develop ovarioles, which suggests multiple routes to the evolution of hybrid sterility in these Heliconius species. These results conform to the expectations of the “dominance” ...
The hybrid origins of three perennial Medicago species
... genomic DNA, a NanoDrop 2000c instrument (Thermo Fisher Scientific, Waltham, MA, USA) was used. The purity of the DNA was measured by the ratio 260/280nm and an accepted ratio should lie between 1.8-2.0. This indicates that most of the substrate is DNA and not protein; low quality will affect the yi ...
... genomic DNA, a NanoDrop 2000c instrument (Thermo Fisher Scientific, Waltham, MA, USA) was used. The purity of the DNA was measured by the ratio 260/280nm and an accepted ratio should lie between 1.8-2.0. This indicates that most of the substrate is DNA and not protein; low quality will affect the yi ...
Please address all correspondence to senior author
... Mendel’s law of segregation predicts equal numbers of each of a parent’s alleles in the gamete pool. But, given that each individual produces only a small number of offspring from a huge number of gametes, there is always a considerable chance that the gametes which make it into the subsequent gener ...
... Mendel’s law of segregation predicts equal numbers of each of a parent’s alleles in the gamete pool. But, given that each individual produces only a small number of offspring from a huge number of gametes, there is always a considerable chance that the gametes which make it into the subsequent gener ...
Parallel trait adaptation across opposing thermal environments in
... the collection, females were maintained in the laboratory as 113 isofemale lines for five generations, at which point they were used to create 10 mass-bred replicate “base” populations. Each replicate base population comprised five females from each isofemale line (i.e., 565 females per replicate). ...
... the collection, females were maintained in the laboratory as 113 isofemale lines for five generations, at which point they were used to create 10 mass-bred replicate “base” populations. Each replicate base population comprised five females from each isofemale line (i.e., 565 females per replicate). ...
Modeling Trabecular Microstructure Evolution via Genetic Algorithm by Samuel W. L. Shames
... Trabecular Architectures for evolution for two di↵erent genomes mapped onto the same set of points under the same stress state at three stages of evolution. The figure shows how drastically the microstructure of the system can change in only a small number of generations and how the general tendency ...
... Trabecular Architectures for evolution for two di↵erent genomes mapped onto the same set of points under the same stress state at three stages of evolution. The figure shows how drastically the microstructure of the system can change in only a small number of generations and how the general tendency ...
Multiparent recombination
... xS xT for each coordinate i. Therefore, probably more than two individuals contribute to the ospring x, but their number is not dened in advance. It is clear that investigations on the eects of dierent numbers of parents on algorithm performance could not be performed in the traditional ES fra ...
... xS xT for each coordinate i. Therefore, probably more than two individuals contribute to the ospring x, but their number is not dened in advance. It is clear that investigations on the eects of dierent numbers of parents on algorithm performance could not be performed in the traditional ES fra ...
How to determine recessive-lethal mutation rates. David D. Perkins Background
... made it possible for H. J. Muller (1927) to demonstrate that X rays are mutagenic, a finding which led to the Nobel Prize. Muller's method using the ClB chromosome depended on the suppression of crossing over by a heterozygous inversion. which kept the irradiated X chromosome intact through a cross, ...
... made it possible for H. J. Muller (1927) to demonstrate that X rays are mutagenic, a finding which led to the Nobel Prize. Muller's method using the ClB chromosome depended on the suppression of crossing over by a heterozygous inversion. which kept the irradiated X chromosome intact through a cross, ...
Name______KEY Genetics C3032 - Examination #2
... DNA transposons excise and then insert into other regions of the DNA; retroposons make an RNA intermediate. d. Conversion vs. recombination using Hfr and F- strains. Conversion from an F- to F+ is rare because the F factor enters the F- cell late; recombination occurs much more frequently because th ...
... DNA transposons excise and then insert into other regions of the DNA; retroposons make an RNA intermediate. d. Conversion vs. recombination using Hfr and F- strains. Conversion from an F- to F+ is rare because the F factor enters the F- cell late; recombination occurs much more frequently because th ...
Polycomb Group silencers collaborate with Notch pathway to cause
... For the isolation of novel tumour-initiating genes in Drosophila melanogaster we used the Gene Search (GS) gain-of-expression system. The P-element-based GS transposon contains five tandem copies of the Gal4 binding (upstream activating sequences -UAS-) sites capable of over- or misexpressing gene(s ...
... For the isolation of novel tumour-initiating genes in Drosophila melanogaster we used the Gene Search (GS) gain-of-expression system. The P-element-based GS transposon contains five tandem copies of the Gal4 binding (upstream activating sequences -UAS-) sites capable of over- or misexpressing gene(s ...
Genetic Allee effects and their interaction with ecological
... capita growth rate in small populations (Stephens et al. 1999). The “demographic” indicates that population growth rate is affected and not just one fitness component. But since this study is only concerned with demographic Allee effects, we will simply refer to them as Allee effects in the followin ...
... capita growth rate in small populations (Stephens et al. 1999). The “demographic” indicates that population growth rate is affected and not just one fitness component. But since this study is only concerned with demographic Allee effects, we will simply refer to them as Allee effects in the followin ...
Nematode genome evolution
... 3.1. The range of haploid chromosome numbers among nematodes Most nematodes have haploid chromosome numbers of n=4–12 (Walton, 1959). The karyotypes of just ~300 species have been studied, but nematodes display a lot of karyotypic variation (Špakulová and Casanova, 2004). The lowest haploid number i ...
... 3.1. The range of haploid chromosome numbers among nematodes Most nematodes have haploid chromosome numbers of n=4–12 (Walton, 1959). The karyotypes of just ~300 species have been studied, but nematodes display a lot of karyotypic variation (Špakulová and Casanova, 2004). The lowest haploid number i ...
An introduction to genetic algorithms / Melanie
... Science arises from the very human desire to understand and control the world. Over the course of history, we humans have gradually built up a grand edifice of knowledge that enables us to predict, to varying extents, the weather, the motions of the planets, solar and lunar eclipses, the courses of ...
... Science arises from the very human desire to understand and control the world. Over the course of history, we humans have gradually built up a grand edifice of knowledge that enables us to predict, to varying extents, the weather, the motions of the planets, solar and lunar eclipses, the courses of ...
An introduction to genetic algorithms
... Science arises from the very human desire to understand and control the world. Over the course of history, we humans have gradually built up a grand edifice of knowledge that enables us to predict, to varying extents, the weather, the motions of the planets, solar and lunar eclipses, the courses of ...
... Science arises from the very human desire to understand and control the world. Over the course of history, we humans have gradually built up a grand edifice of knowledge that enables us to predict, to varying extents, the weather, the motions of the planets, solar and lunar eclipses, the courses of ...
Article Are Convergent and Parallel Amino Acid Substitutions in
... ß The Author 2015. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please ...
... ß The Author 2015. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please ...
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.