نتایج جستجو برای: gene frequency

تعداد نتایج: 1580534  

Journal: Poultry Science Journal 2017

Eggshell quality is the main trait to assess egg quality. Marker assisted selection can be used to improve this trait. During eggshell formation, a mass of inorganic minerals is deposited. The Sodium Channel (SCNN1) gene family plays an essential role in cation transportation and SCNN1g is a member of this gene family. The objective of this study was to estimate the frequency of SCNN1g gene var...

Journal: :iranian journal of biotechnology 2007
saeed zaker bostanabad abolfazl fateh khaled seyedi farid abdolrahimi ali karimi

the aim of this study was to investigate the frequency, location and type of rpob gene mutations in mycobacterium tuberculosis (mtb) collected from patients in the southern endemic region of iran. drug susceptibility testing was determined by using the bactec system and the center for diseases control’s (cdc) standard conventional proportional method. in 29 rifampicin-resistant mtb (85%) isolat...

Journal: :iranian journal of biotechnology 2006
amir mohammadi mohammad reza nassiry ghorban elyasi jalil shodja

b-lactoglobulin (coded by the b-lg gene) is the major milk whey protein in ruminants. studies have shown that this protein is polymorphic in many breeds of sheep as a result of a single base pair substitution in the b-lg gene that also gives rise to rsai restriction fragment length polymorphism (rflp). blood samples were collected from 391 animals belonging to 5 iranian and 6 russian sheep bree...

Journal: :iranian journal of veterinary medicine 2014
ania ahani azari taghi zahraei salehi bahar nayeri fasaei omid madadgar masoud alebouyeh

background: among all common techniques in sitedirectedmutagenesis, λ red recombinase system has beenwidely used to knock out chromosomal genes in bacteria. in thismethod, there is always the risk of dna linear digestion byhost's restriction enzymes that leads to the low frequency ofrecombination. objectives:to overcome this, we constructeda recombinant vector to disrupt phop gene in salmonella...

رومانی, سارا , زالی, محمدرضا, واحدی, محسن, اکبری, زهرا , طالقانی, محمدیعقوب , عظیم‌زاده , پدرام , محبی , سیدرضا, منتظر حقیقی, مهدی , میرطالبی, هانیه ,

    Background & Aim : One of the important DNA repair systems is Mismatch Repair (MMR). Mutation in this system can cause different types of cancer. Exonuclease1 (Exo1) is the only exonuclease involved in the human MMR system. Since Exo1 plays a distinctive role in the MMR system, this gene has gained a great intrest as a potential risk factor in Colorectal Cancer (CRC). Single nucleotide poly...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0

pathogens can be transmitted to the humans through the consumption of contaminated local dairy products such as cheese and, thus, cause pathogenic diseases. shiga toxin produced by escherichia coli can cause mild watery diarrhea as well as serious complications such as hemorrhagic colitis, and hemolytic uremic syndrome and may even lead to death. the present study was conducted to investigate t...

Journal: :Current Biology 2008
Narendra Maheshri

Cells often respond to external signals by altering their gene expression. The external signaling information is transduced and typically encoded in concentrations of relevant transcription factors. A recent study demonstrates that, by encoding this information in the frequency with which genes 'see' a transcription factor, the expression of hundreds of genes can be modulated in a linearly prop...

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