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Sujet d`ordre général
Sujet d`ordre général

... Pre-Darwinian concept of species: in this obsolete view, the species is the normal type, the species concept is among the a priori principles structuring the living world. Present: The extensive commonality between genomes makes the relationship between genomes and species ever ...
A comparative genomic study among various gene families related
A comparative genomic study among various gene families related

... employed. The brown rot species S. lacrymans and P. placenta and the mycorrhizal species L. bicolor have undergone extensive gene losses in the CAZY gene families in comparison to the common ancestor of the Basidiomycete species and also in comparison to the white rot species or the soil saprotroph ...
Document
Document

... – Construct “category term vector” Vc for each category c – Weight of term ti in this vector is wij=TFij*IDFi • TFij is frequency of ti in all training sentences of category j • IDFi is “inverse document frequency” = 1+log(N/ni), N = total # documents, ni = number of documents containing ti. • TF me ...
11.1 Genetic Variation Within Population
11.1 Genetic Variation Within Population

... Genetic variation in a population increases the chance that some individuals will survive. • Genetic variation leads to phenotypic variation. • Phenotypic variation is necessary for natural selection. • Genetic variation is stored in a population’s gene pool. – made up of all alleles in a population ...
Chapter 4
Chapter 4

... Morgan set his student Alfred Sturtevant to the project. “In the latter part of 1911, in conversation with Morgan, I suddenly realized that the variations in strength of linkage, already attributed by Morgan to differences in the spatial separation of genes, offered the possibility of determining se ...
Advances in the molecular ecology of foxes
Advances in the molecular ecology of foxes

... and the University of Western Australia, has been at the forefront of research in this area in Australia. Their most recent program was divided into five main projectelements: • the survey and detection of foxes at low abundance for better targeted baiting and other fox control measures • the monito ...
2005 Final Report ( format)
2005 Final Report ( format)

... majority of known HGT events are in prokaryotes. Indeed, in some cases, as much as 25% of an organism’s genes come about through HGT. There are three major mechanisms for HGT in prokaryotes: conjugation, transformation, and transduction. Conjugation is direct cell-to-cell contact where one prokaryot ...
Genetic Reasoning Evolving Proofs with Genetic
Genetic Reasoning Evolving Proofs with Genetic

... evolution. In recent years, these methods have been applied successfully to a spectrum of real-world and academic problem domains. A mathematical function can for instance by optimized by a genetic algorithm that keeps a population of solution candidates which are reproduced by selection, modi ed by ...
disease? better for detecting genetic susceptibility to infectious
disease? better for detecting genetic susceptibility to infectious

... explore this effect, we used a series of stochastic simulations to model a scenario based loosely on bovine tuberculosis. We find that a candidate gene approach tends to have greater statistical power than studies that use large numbers of single nucleotide polymorphisms (SNPs) in genome-wide associ ...
Poster Category 2: Sex and Sexual Development   
Poster Category 2: Sex and Sexual Development   

... including conifer pathogens associated with mountain pine beetles in the genera Grosmannia and its the asexual  form  Leptographium  has  been  investigated.  We  characterized  a  MAT1‐2  idiomorph  from  the  assembled  and  annotated genome of G. clavigera. The MAT locus is flanked by genes of cy ...
Document
Document

... C22. Directional selection favors the phenotype at one phenotypic extreme. Over time, natural selection is expected to favor the fixation of alleles that cause these phenotypic characteristics. Disruptive selection favors two or more phenotypic categories. It will lead to a population with a balanc ...
Lecture # 5 Mutations
Lecture # 5 Mutations

... • Substitutions usually affect no more than a single amino acid, & sometimes they have no effect at all. ...
Identification of the chlB Gene and the Gene Product Essential for
Identification of the chlB Gene and the Gene Product Essential for

... Suzuki and Bauer 1992) but not in angiosperms (Hiratsuka et al. 1989, Shinozaki et al. 1986, Wolfe et al. 1992). It has been established that the presence of these genes is a prerequisite for greening in darkness. Molecular genetic studies using the green alga Chlamydomonas reinhardtii have confirme ...
C1. A gene pool is all of the genes present in a particular population
C1. A gene pool is all of the genes present in a particular population

... C22. Directional selection favors the phenotype at one phenotypic extreme. Over time, natural selection is expected to favor the fixation of alleles that cause these phenotypic characteristics. Disruptive selection favors two or more phenotypic categories. It will lead to a population with a balanc ...
NCEA Level 2 Biology (91159) 2015
NCEA Level 2 Biology (91159) 2015

... The expression of the genotype can be affected by the environmental conditions that exist internally or externally for an organism without the genotype itself being altered in any way. The genotype provides the instruction set for a particular protein or function, but this may not be able to be full ...
The Time of Your Life
The Time of Your Life

... You must include major events, but you can include other events that you feel are important as well. ...
PPT File
PPT File

... DNA methylation in human sperm samples  phenotypic differences in the next generation • Sperm samples from oligospermic patients: often contain DNA-methylation defects at imprinted loci ...
Class Notes On Heredity
Class Notes On Heredity

... --Some traits that your parents have, you may not have, but your brothers and sisters may have them. Some traits that your parents have won’t appear until you yourself have children. Heredity or genetic inheritance (The inheriting of genes from your parents) follows a specific pattern…but, what is t ...
You Light Up My Life
You Light Up My Life

... • Sex chromosomes are nonidentical but still homologous • Homologous chromosomes interact, then segregate from one another during meiosis ...
Genetic Hearing Loss
Genetic Hearing Loss

...  Should be tailored to provide information to the parents about their child's hearing loss etiology and about expected pattern of inheritance of any genetic disorder  Diligent search for etiology should be undertaken  Obtain a detailed family history; a positive history includes family members wh ...
February 2009 - Retina New Zealand
February 2009 - Retina New Zealand

... Knowing Our Genes and Mutations: Professor Andreas Gai Human retinal dystrophies show an unparalleled diversity. Genetically, a disease phenotype in a family may follow any of the Mendelian patterns of inheritance (autosomal dominant, autosomal recessive, and X-chromosomal). In addition, mitochondri ...
Feb 15 - 16: DR Chapter 5 Genetics
Feb 15 - 16: DR Chapter 5 Genetics

... d.offspring with all purple flowers _____ 19. When a relationship between two different things is shown in a fraction, it is a. a ratio. b. a problem c. a dominant trait d. a recessive trait. _____ 20. Gregor Mendel realized the only explanation for his results was that a. the traits were appearing ...
Is cancer in your genes? Genetic Counseling Offered at Carolinas
Is cancer in your genes? Genetic Counseling Offered at Carolinas

... the egg or sperm that formed the child. Acquired mutations happen sometime later in life because of errors occurring as cells divide during a person’s lifetime or exposure to substances such as certain chemicals in tobacco smoke, radiation or UV rays from the sun. Inherited genetic mutations play a ...
ch11_lecture
ch11_lecture

... • Sex chromosomes are nonidentical but still homologous • Homologous chromosomes interact, then segregate from one another during meiosis ...
SNP Array Activity Learning Objectives Introduction
SNP Array Activity Learning Objectives Introduction

... What is a SNP array? How is it similar to a microarray? How is it different? Both of these techniques have entered widespread use in the wake of the Human Genome Project and improvements in sequencing technology. DNA Microarrays DNA microarrays (also called DNA arrays and gene chips) are manufacture ...
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Genetic engineering



Genetic engineering, also called genetic modification, is the direct manipulation of an organism's genome using biotechnology. It is therefore a set of technologies used to change the genetic makeup of cells, including the transfer of genes within and across species boundaries to produce improved or novel organisms. New DNA may be inserted in the host genome by first isolating and copying the genetic material of interest using molecular cloning methods to generate a DNA sequence, or by synthesizing the DNA, and then inserting this construct into the host organism. Genes may be removed, or ""knocked out"", using a nuclease. Gene targeting is a different technique that uses homologous recombination to change an endogenous gene, and can be used to delete a gene, remove exons, add a gene, or introduce point mutations.An organism that is generated through genetic engineering is considered to be a genetically modified organism (GMO). The first GMOs were bacteria generated in 1973 and GM mice in 1974. Insulin-producing bacteria were commercialized in 1982 and genetically modified food has been sold since 1994. Glofish, the first GMO designed as a pet, was first sold in the United States December in 2003.Genetic engineering techniques have been applied in numerous fields including research, agriculture, industrial biotechnology, and medicine. Enzymes used in laundry detergent and medicines such as insulin and human growth hormone are now manufactured in GM cells, experimental GM cell lines and GM animals such as mice or zebrafish are being used for research purposes, and genetically modified crops have been commercialized.
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