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Disproportionate Roles for the X Chromosome and
Disproportionate Roles for the X Chromosome and

... genetics. By measuring intraspecific polymorphism and interspecific divergence across genomes, evolutionary properties of those mutations targeted by natural selection can be discovered. Under this framework as well, generalities are widely sought and difficult to identify. A useful way to make progres ...
Genetic predisposition to sarcoidosis: another brick in the wall EDITORIAL
Genetic predisposition to sarcoidosis: another brick in the wall EDITORIAL

... African–American sarcoidosis patients, and further studies in non-Europeans are likely to reveal intriguing new findings [25]. GWASs have not explained as much of the genetic components of many diseases, including sarcoidosis, as was anticipated. As the power of the GWAS approach increases with acce ...
A new approach for identifying non
A new approach for identifying non

... clusively demonstrating that its frequency is higher than 0.004. From a statistical point of view, both points (1) and (2) are a function of the frequency q of the mutation and of the sample size of random genes examined. Figure 1 shows the probability of detecting a mutation as a function of freque ...
Root organization and gene expression patterns
Root organization and gene expression patterns

... Brassica napus roots. The AX92 gene they characterized was expressed exclusively in the cortical cells right up to the periphery of the periblem initial tier. In root tips with open apical organization, cell lineages do not connect to distinct initial tiers. Instead, cell files can be followed to a ...
sacB - GENI
sacB - GENI

... How We are Working to Solve Them We have designed the core of a curriculum, based on genetic complementation of defined E. coli mutants, that enables true experimentation in the classroom The modular format allows testing completely different genes every semester but does so with repetitive sets of ...
Review. Characterization and selection of hexaploid wheats
Review. Characterization and selection of hexaploid wheats

... pathotype, but is susceptible to two Swedish and one Australian pathotypes. Resistance to Ha71 is inherited as determined by a single dominant factor (Cre2) originally located in the N v genome (Delibes et al., 1993; Andrés et al., 2001). The Cre6 gene, characterized in collaboration with an Austral ...
Complex Signatures of Natural Selection at the Duffy Blood Group
Complex Signatures of Natural Selection at the Duffy Blood Group

... The FY*O allele, which is fixed in sub-Saharan Africa but is essentially absent elsewhere, is also thought to have been the target of positive selection because it confers resistance to malaria due to Plasmodium vivax (Livingstone 1984; Tournamille et al. 1995; Hadley and Peiper 1997). The FY*O alle ...
A. niger
A. niger

... The genome-scale metabolic network of A. niger. Nodes are metabolites while links are reactions. The color of the nodes represents different functional categories. The size of nodes is proportional to the number of reactions from or to that node (metabolite) in the genome-wide network. (a) The gene ...
gene_expression
gene_expression

... EECS 600: Systems Biology & Bioinformatics ...
Solid Tumour Section Soft tissue tumors: t(1;13)(p36;q14) in alveolar rhabdomyosarcoma
Solid Tumour Section Soft tissue tumors: t(1;13)(p36;q14) in alveolar rhabdomyosarcoma

Novel SIL1 mutations cause cerebellar ataxia and
Novel SIL1 mutations cause cerebellar ataxia and

... single nucleotide variants (SNVs) and short insertions and deletions (indels) were called using samtools mpileup with the extended base alignment quality (BAQ) adjustment (−E), and were then quality filtered to require at least 20 % of reads supporting the variant call. Variants were annotated using ...
MIT Department of Biology 7.28, Spring 2005
MIT Department of Biology 7.28, Spring 2005

... loss for an explanation for the poor recombination seen in region 3, you talk to your labmates to see if they have any good ideas. One smart person suggests that you examine the E. coli genomic sequence immediately surrounding the lac- mutation on the recipient chromosome. Given that the sequence is ...
Chapter 15 – The Chromosomal Basis of Inheritance
Chapter 15 – The Chromosomal Basis of Inheritance

... The other two phenotypes (gray-vestigial and black-normal) were fewer than expected from independent assortment (but totally ...
AP Biology - Al Young Studios
AP Biology - Al Young Studios

... 20. Distinguish between an insertion sequence and a complex transposon. 21. Briefly describe two main strategies that cells use to control metabolism. 22. Explain the adaptive advantage of genes grouped into an operon. 23. Using the trp operon as an example, explain the concept of an operon and the ...
Polymorphisms in FAS and CASP8 genes may contribute to the
Polymorphisms in FAS and CASP8 genes may contribute to the

... Whether these SNPs have any effect, either with affecting the expression of FAS itself or via linkage to other genetic abnormalities playing role in the pathogenesis of the disease needs to be determined. In single gene disorders, SNPs present in other genes may contribute to the development or to t ...
use of genomic tools to discover the cause of
use of genomic tools to discover the cause of

... Champagne dilution of coat color in horses is caused by dominant gene action. Three sire families were identified as segregating for this trait. Genome wide linkage analysis using 104 microsatellite DNA markers was used to map the gene to ECA14 (LOD > 11.0). Four genes, namely SPARC, SLC36A1, SLC36A ...
Complete Mitochondrial DNA Sequences of Six
Complete Mitochondrial DNA Sequences of Six

... The only protein gene encoded by the light strand for ND6 (see the legend to Fig. 1 for abbreviations of mitochondrial genes) has an increased proportion of T and G in all codon positions due to the strand-specific base composition bias of mtDNAs, which influences replacement patterns at the amino aci ...
B Supplementary Figure 2
B Supplementary Figure 2

... respectively. FLK is a positive regulator of flowering via suppressing the expression of another flowering gene FLC, while the role of FLC is to repress flowering. (MiHye Lim et al 2004, Scott D. Michaels and Richard M. Amasino 1999). Actin (ACT2) is used as the internal control, so each tissue’s tr ...
Strong dominance of functional alleles over gene deletions in
Strong dominance of functional alleles over gene deletions in

... containing both geneticin and nourseothricin; the plasmid was then removed by growing the resultant diploids on media containing 5-fluoroorotic acid. Only nonessential haploid deletion strains that showed signs of having negative effects on the rate of growth or longevity under starvation in our pre ...
Gene Section FANCG  (Fanconi  anemia,  complementation  group G)
Gene Section FANCG (Fanconi anemia, complementation group G)

unique features of the plant life cycle and their consequences
unique features of the plant life cycle and their consequences

... are masked in the heterozygous diploid individuals10. Despite its possible advantages, natural selection has favoured the reduction of the haploid phase in plants in three ways: the proportion of the total life cycle, physical size and the range of biological processes. Although there is great diver ...
Genetics
Genetics

... Some human traits are controlled by a single gene that has more than two alleles. Such a gene is said to have multiple alleles – three or more forms of a gene that code for a single trait. ...
zChap03_140901 - Online Open Genetics
zChap03_140901 - Online Open Genetics

... only be determined by experimental observation. We know from observation that individuals heterozygous for the purple and white alleles of the flower color gene have purple flowers. Thus, the allele associated with purple color is therefore said to be dominant to the allele that produces the white c ...
Programmed cell death is a specialized type of senescence
Programmed cell death is a specialized type of senescence

... Class II – genes that control both senescence and other growth processes Class III- genes that control senescence in response to environmental factors Class IV- regulatory genes that up-regulate senescence activity AND down regulate cellular maintenance activities Class V- genes that control degrada ...
Gene Section CDX2 (caudal-related homeobox 2) Atlas of Genetics and Cytogenetics
Gene Section CDX2 (caudal-related homeobox 2) Atlas of Genetics and Cytogenetics

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Site-specific recombinase technology



Nearly every human gene has a counterpart in the mouse (regardless of the fact that a minor set of orthologues had to follow species specific selection routes). This made the mouse the major model for elucidating the ways in which our genetic material encodes information. In the late 1980s gene targeting in murine embryonic stem (ES-)cells enabled the transmission of mutations into the mouse germ line and emerged as a novel option to study the genetic basis of regulatory networks as they exist in the genome. Still, classical gene targeting proved to be limited in several ways as gene functions became irreversibly destroyed by the marker gene that had to be introduced for selecting recombinant ES cells. These early steps led to animals in which the mutation was present in all cells of the body from the beginning leading to complex phenotypes and/or early lethality. There was a clear need for methods to restrict these mutations to specific points in development and specific cell types. This dream became reality when groups in the USA were able to introduce bacteriophage and yeast-derived site-specific recombination (SSR-) systems into mammalian cells as well as into the mouse
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