Does ecotypic-based genetic diversity improve productivity? A
... Salt marshes are highly productive ecosystems but are often dominated by a single species. High genetic diversity might influence the function of these productive, monospecific stands. Spartina alterniflora often dominates marshes on the East and Gulf coasts and is commonly used for marsh restoratio ...
... Salt marshes are highly productive ecosystems but are often dominated by a single species. High genetic diversity might influence the function of these productive, monospecific stands. Spartina alterniflora often dominates marshes on the East and Gulf coasts and is commonly used for marsh restoratio ...
Does Speciation between Arabidopsis halleri and
... demographic models of speciation [6,7], and also allows great flexibility in the type of models that can be compared [8]. In parallel, the availability of genomic tools in model species along with population genomic and candidate gene approaches have resulted in the identification of major genes and ...
... demographic models of speciation [6,7], and also allows great flexibility in the type of models that can be compared [8]. In parallel, the availability of genomic tools in model species along with population genomic and candidate gene approaches have resulted in the identification of major genes and ...
De Pace et al. (2007)-Farm. Syst. Des
... Hatfield, A. Rizzoli Eds., Catania (Italy), 10-12 September 2007, book 2 – Field-farm scale design and improvement, pag. 155-156. ISBN 978-88-7830-474-1. PDF Summary In farming systems aimed to sustainable crop production, the pressure of certain activities (i.e. agrochemical distribution, crop vari ...
... Hatfield, A. Rizzoli Eds., Catania (Italy), 10-12 September 2007, book 2 – Field-farm scale design and improvement, pag. 155-156. ISBN 978-88-7830-474-1. PDF Summary In farming systems aimed to sustainable crop production, the pressure of certain activities (i.e. agrochemical distribution, crop vari ...
ANSWER ALL QUESTIONS
... Today, scientists are learning more and more about genes and about their effect on ...
... Today, scientists are learning more and more about genes and about their effect on ...
The Major Transitions in Evolution
... Difficult transitions are ‘unique’ • Operational definition: all organisms sharing the trait go back to a common ancestor after the transition • These unique transitions are usually irreversible (no cell without a genetic code, no bacterium derived from a eukaryote can be found today) ...
... Difficult transitions are ‘unique’ • Operational definition: all organisms sharing the trait go back to a common ancestor after the transition • These unique transitions are usually irreversible (no cell without a genetic code, no bacterium derived from a eukaryote can be found today) ...
Critical Analysis of Evolution – Grade 10
... theory maintains that all living forms have descended from earlier living forms and ultimately from a single common ancestor. Darwin envisioned the theory of universal common descent as a necessary result of evolutionary changes in organisms and populations, and represented it in his branching tree ...
... theory maintains that all living forms have descended from earlier living forms and ultimately from a single common ancestor. Darwin envisioned the theory of universal common descent as a necessary result of evolutionary changes in organisms and populations, and represented it in his branching tree ...
Final PP Presentation
... It is suggested that variation can come about through trade-offs. Where individuals within the same normal range of a personality dimension may achieve the same levels of fitness through different means. This means that some tradeoff exists, where if one component of fitness is maximized by increasi ...
... It is suggested that variation can come about through trade-offs. Where individuals within the same normal range of a personality dimension may achieve the same levels of fitness through different means. This means that some tradeoff exists, where if one component of fitness is maximized by increasi ...
From M. Tomasello, The Cultural Origins of Human Cognition
... erroneous view that basically ignores all of the social-cultural work that must be done by individuals and groups of individuals, in both historical and ontogenetic time, to create uniquely human cognitive skills and products. From an historical perspective, a quarter of a million years is a very lo ...
... erroneous view that basically ignores all of the social-cultural work that must be done by individuals and groups of individuals, in both historical and ontogenetic time, to create uniquely human cognitive skills and products. From an historical perspective, a quarter of a million years is a very lo ...
Genetic Enhancement
... could sculpt the nature of human beings in much the same way as we sculpted dogs— namely, by large scale selective breeding programs; or, on a much smaller scale, the simple fact of who we choose as a mate. (3) Put that way, genetic engineering is just a new, THIRD way of altering the human genome. ...
... could sculpt the nature of human beings in much the same way as we sculpted dogs— namely, by large scale selective breeding programs; or, on a much smaller scale, the simple fact of who we choose as a mate. (3) Put that way, genetic engineering is just a new, THIRD way of altering the human genome. ...
Larson 2005
... invasion biology, we don’t need to give up. Instead, a reassessment of our approach to these species – as well as the metaphors used to describe it – is required. These two misperceptions may contribute to social misinterpretation of invasion biology, thereby interfering with conservation activities ...
... invasion biology, we don’t need to give up. Instead, a reassessment of our approach to these species – as well as the metaphors used to describe it – is required. These two misperceptions may contribute to social misinterpretation of invasion biology, thereby interfering with conservation activities ...
Mutations
... Chromosomal Mutations • Nondisjunction = failure of homologous chromosomes to separate during meiosis resulting in gametes (egg or sperm) with too few or too many chromosomes • Animation: ...
... Chromosomal Mutations • Nondisjunction = failure of homologous chromosomes to separate during meiosis resulting in gametes (egg or sperm) with too few or too many chromosomes • Animation: ...
1.Article
... India, despite being a mega-diversity country, and hosting as well two bio-diversity hotspots, in the Eastern Himalayas and the Western Ghats, it is disconcerting to note that only scanty studies so far are attempted on diversity, distribution and ecology of mayflies. In the Western Ghats, for insta ...
... India, despite being a mega-diversity country, and hosting as well two bio-diversity hotspots, in the Eastern Himalayas and the Western Ghats, it is disconcerting to note that only scanty studies so far are attempted on diversity, distribution and ecology of mayflies. In the Western Ghats, for insta ...
Study guide 2
... use? What is an ancestral versus derived characteristic? Can characteristics evolve more than once? If so, how might this affect the construction of a phylogeny? Give an example. What are homologous characteristics versus analogous characteristics (homoplasy)? What is parsimony and how is it used i ...
... use? What is an ancestral versus derived characteristic? Can characteristics evolve more than once? If so, how might this affect the construction of a phylogeny? Give an example. What are homologous characteristics versus analogous characteristics (homoplasy)? What is parsimony and how is it used i ...
Conservation of Farm Animal Genetic Resources
... The role and contribution of Farm Animal Genetic Resources (FAnGR) have often been overlooked, as they had to compete against high input and output breeds. However, indigenous FAnGR carry genes that enable them to tolerate harsh environments, cope with thorny vegetation in drought-prone areas, walk ...
... The role and contribution of Farm Animal Genetic Resources (FAnGR) have often been overlooked, as they had to compete against high input and output breeds. However, indigenous FAnGR carry genes that enable them to tolerate harsh environments, cope with thorny vegetation in drought-prone areas, walk ...
Population Genetics (Learning Objectives)
... satisfy five conditions. (1) Very large population size. In small populations, chance fluctuations in the gene pool, genetic drift, can cause genotype frequencies to change over time. (2) No migrations. Gene flow, the transfer of alleles due to the movement of individuals or gametes into or out of o ...
... satisfy five conditions. (1) Very large population size. In small populations, chance fluctuations in the gene pool, genetic drift, can cause genotype frequencies to change over time. (2) No migrations. Gene flow, the transfer of alleles due to the movement of individuals or gametes into or out of o ...
Getting to the Roots of Plant Evolution
... present in the genomes of plants that can help us to understand their evolutionary relationships. While molecular characters such as these used to be very difficult to obtain, recent advances in fast, high volume DNA sequencing have made it possible to get large amounts of genetic sequence data for ...
... present in the genomes of plants that can help us to understand their evolutionary relationships. While molecular characters such as these used to be very difficult to obtain, recent advances in fast, high volume DNA sequencing have made it possible to get large amounts of genetic sequence data for ...
Definition - Cdubbiology
... 3. Which of the following would result if proinsulin were not transported to the Golgi complex? a. The insulin gene would be repressed stopping insulin production. b. Proinsulin would not be converted to insulin. c. The amino acids that form proinsulin would build up in the cell. d. Insulin would be ...
... 3. Which of the following would result if proinsulin were not transported to the Golgi complex? a. The insulin gene would be repressed stopping insulin production. b. Proinsulin would not be converted to insulin. c. The amino acids that form proinsulin would build up in the cell. d. Insulin would be ...
Jeet Guram
... The researchers measured the effects of the accumulating deleterious mutations on the fitness of the TEM-1 β-lactamase enzyme. Fitness was calculated by determining the fraction of mutants that conferred ampicillin resistance after each successive round of mutagenesis; cells containing mutants not ...
... The researchers measured the effects of the accumulating deleterious mutations on the fitness of the TEM-1 β-lactamase enzyme. Fitness was calculated by determining the fraction of mutants that conferred ampicillin resistance after each successive round of mutagenesis; cells containing mutants not ...
Getting to the Roots of Plant Evolution
... present in the genomes of plants that can help us to understand their evolutionary relationships. While molecular characters such as these used to be very difficult to obtain, recent advances in fast, high volume DNA sequencing have made it possible to get large amounts of genetic sequence data for ...
... present in the genomes of plants that can help us to understand their evolutionary relationships. While molecular characters such as these used to be very difficult to obtain, recent advances in fast, high volume DNA sequencing have made it possible to get large amounts of genetic sequence data for ...
Lab #8 Pop genetics
... 1 in 5 in Central Africans = HbHs unusual for allele with severe detrimental effects in homozygotes 1 in 100 = HsHs usually die before reproductive age Why is the Hs allele maintained at such high levels in African populations? ...
... 1 in 5 in Central Africans = HbHs unusual for allele with severe detrimental effects in homozygotes 1 in 100 = HsHs usually die before reproductive age Why is the Hs allele maintained at such high levels in African populations? ...
Ocular Anomalies - European CHS Network
... INSERM U 393, University of Paris 5 René Descartes, Paris, France; 5Center of reference of CCHS, Robert Debré Hospital, AP-HP, University Paris 7, Paris, France Background and Purpose: Congenital Central Hypoventilation Syndrome (CCHS), ultra rare disease, ocular signs, first described by Goldberg, ...
... INSERM U 393, University of Paris 5 René Descartes, Paris, France; 5Center of reference of CCHS, Robert Debré Hospital, AP-HP, University Paris 7, Paris, France Background and Purpose: Congenital Central Hypoventilation Syndrome (CCHS), ultra rare disease, ocular signs, first described by Goldberg, ...
Summative Assessment
... the answer to the definition on the blank provided. (5 marks) All R.E 9.4 Analyze the process of human reproduction, including the influence of reproductive and ...
... the answer to the definition on the blank provided. (5 marks) All R.E 9.4 Analyze the process of human reproduction, including the influence of reproductive and ...
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.