• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Gene Section THBS1 (thrombospondin-1) Atlas of Genetics and Cytogenetics in Oncology and Haematology
Gene Section THBS1 (thrombospondin-1) Atlas of Genetics and Cytogenetics in Oncology and Haematology

... TSP1 with poor prognosis in squamous non-small cell lung carcinoma, pancreatic adenocarcinoma, invasive cervical carcinoma, and oral squamous cell carcinomas. TSP1 is generally not a useful prognostic factor in breast or prostate cancers, although one study of 58 breast DCIS showed loss of stromal T ...
GENE MUTATION = POINT MUTATION at the DNA level: at the level
GENE MUTATION = POINT MUTATION at the DNA level: at the level

... • about 60% of human lung cancers involve mutations in a tumor suppressor gene called p53 • a mutation database exists that includes more than 500 entries of sequenced p53 genes from lung cancer cells • a large percentage of these 500 entries have GC to TA transversions (see next page for mechanism) ...
Genetics Evolution EOC practice 30
Genetics Evolution EOC practice 30

... accident, they quickly grow a hollow claw of equal length. Because the new claw is lighter, they can wave it faster. A male ddler crab is shown below. ...
DNA Sequencing
DNA Sequencing

...  Not all vectors successfully incorporate the recombinant DNA so scientists have to have a way to identify the bacteria colonies with recombinant DNA.  Usually, the DNA is inserted in a region that codes for antibiotic resistance; if the DNA insertion is successful then the resistance gene is non ...
AP Bio Ch.18 “Genetics of Viruses and Bacteria” The Genetics of Viruses
AP Bio Ch.18 “Genetics of Viruses and Bacteria” The Genetics of Viruses

... into mRNA in the original cell. One advantage of a plasmid or viral vector over cDNA is that they contain regulatory sequences and introns which mRNA and therefore, cDNA, would not. cDNA or complementary DNA ...
Reagents
Reagents

... with HBBS. For CS cultures, a second layer of collagen gel was added after infections, followed by addition of serum free William’s E medium plus 100 nM Dexamethasone, on both CM and CS cultures. We validated infectivity over the majority of the cells by using an Adenovirus vector expressing GFP (S ...
AP Bio Ch.18 “Genetics of Viruses and Bacteria” The Genetics of Viruses
AP Bio Ch.18 “Genetics of Viruses and Bacteria” The Genetics of Viruses

... expression of different genes by cells with the same genome. 6. Describe at what level gene expression is generally controlled. Fig. 19.3 Other examples are places where expression can be turned on or off, accelerated, or slowed down. Activity: “Control of Transcription”, “PostTranscriptional Contro ...
RNA and Protein Synthesis Powerpoint
RNA and Protein Synthesis Powerpoint

... Copyright Pearson Prentice Hall ...
group_presentation
group_presentation

... the repeat results in a defective gene product and often disease. •Many inherited diseases are the result of a single difference in the genetic code for a particular protein. As a result of that difference, either a protein is not made at all, made in inadequate amounts, or made in a defective form. ...
Advanced Environmental Biotechnology II
Advanced Environmental Biotechnology II

... RNA extraction from environmental matrices Methods for RNA extraction have been less frequently used and are less well known. Due to the short half-life of bacterial messenger RNA as well as the high abundance and persistence of RNases, an unbiased recovery of total RNA is difficult. Considerable e ...
Rad51-deficient vertebrate cells accumulate
Rad51-deficient vertebrate cells accumulate

... by natural or medical radiation. They also occur when chromosomes exchange genetic material (when pieces of chromosomes trade places) in preparation for cell division. The BRCA2 protein transports the RAD51 protein to sites of DNA damage in the cell nucleus. RAD51 then binds to the damaged DNA and e ...
Transposable Elements
Transposable Elements

... Nobel Prize, 1983 Physiology or Medicine ...
Chapter 9
Chapter 9

... paternally derived genes are absent or disrupted, the PWS phenotype results. When this same segment is missing from the maternally derived chromosome 15, a completely different disease, Angelman syndrome, arises. This pattern of inheritance when expression of a gene depends on whether it is inherite ...
1. The following processes are required to produce
1. The following processes are required to produce

... ❏ A. provides a mechanism that circumvents the laws of thermodynamics. ❏ B. provides an explanation for homologies between organisms. ❏ C. explains why human beings exist ___ is wrong because 2. Pick and justify the scientifically correct statement: ❏ A. Evolution always produces organisms of increa ...
BIMM 101 Recombinant DNA Techniques Credit by Exam Student
BIMM 101 Recombinant DNA Techniques Credit by Exam Student

... an understanding of the theoretical basis of, and proficiency with, various molecular biology techniques. Students must also demonstrate the ability to interpret the results of experiments using these molecular biology techniques, as well as familiarity with commonly used bioinformatics tools. The e ...
Promega Notes: T4 RNA Ligase: A Molecular Tool for RNA and DNA
Promega Notes: T4 RNA Ligase: A Molecular Tool for RNA and DNA

... molecule contains a 3´-hydroxyl group (OH). Circularization of RNA molecules is also possible. Like many of the bacteriophage T4encoded enzymes, the function of T4 RNA ligase in the life cycle of the bacteriophage is speculative. RNA ligase was discovered by Hurwitz and colleagues at the Albert Eins ...
Review - UCR Class!
Review - UCR Class!

... • In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" nitrogen (15N) and then transferred them to a medium containing 14N. • Draw the results you would expect after one round of DNA replication in the presence of 14N if the conservative model was true. ...
Study Guide
Study Guide

... The ratio of nitrogen to phosphorus in the transforming principle is similar to the ratio found in DNA. Which type of enzyme destroys the ability of the transforming principle to function? ...
CHAPTER 6
CHAPTER 6

... – RNA processed by splicing (removal of introns and joining of exons), capping (5’ end), and polyA tail addition (3’ end) • rRNA: Components of ribosome: Protein synthesis – Small subunit of ribosome: Single rRNA – Large subunit of ribosome: Large subunit rRNA, 5S rRNA, and in eukaryotes 5.8S rRNA • ...
2–3 Carbon Compounds
2–3 Carbon Compounds

... - Uses a genetic code – chemical letters in RNA that make up words which code for particular amino acids - Check your understanding: what happens if the letters change? ...
E. coli - Haixu Tang`s Homepage
E. coli - Haixu Tang`s Homepage

... Genomic sequence Specialized databases ...
82. The Double Helix
82. The Double Helix

... of the ladder, although in the actual molecule they are tightly packed on top of one another as no ladder rungs ever would be. The particular sequence of the four different bases constitutes a "code" in which specific hereditary information is recorded. The method by which that code is translated to ...
lecture 3 notes
lecture 3 notes

... Ciliates are diploid and have one micro diploid nucleus that only participates during sexual reproduction (no transcription). Genes in the micronucleus in some species are completely scrambled. During macronucleus formation, sequences and orientation of the genes is restored. Macronuclei contain num ...
Prokaryotic Gene Regulation
Prokaryotic Gene Regulation

... "When I was warning about the danger ahead on Wall Street months ago because of the lack of oversight, Senator McCain was telling the Wall Street Journal -- and I quote -- 'I'm always for less regulation.' " – Sen. Barack Obama “Senator Obama was silent on the regulation of Fannie Mae and Freddie Ma ...
Genome Organization
Genome Organization

< 1 ... 239 240 241 242 243 244 245 246 247 ... 498 >

Primary transcript



A primary transcript is the single-stranded ribonucleic acid (RNA) product synthesized by transcription of DNA, and processed to yield various mature RNA products such as mRNAs, tRNAs, and rRNAs. The primary transcripts designated to be mRNAs are modified in preparation for translation. For example, a precursor messenger RNA (pre-mRNA) is a type of primary transcript that becomes a messenger RNA (mRNA) after processing.There are several steps contributing to the production of primary transcripts. All these steps involve a series of interactions to initiate and complete the transcription of DNA in the nucleus of eukaryotes. Certain factors play key roles in the activation and inhibition of transcription, where they regulate primary transcript production. Transcription produces primary transcripts that are further modified by several processes. These processes include the 5' cap, 3'-polyadenylation, and alternative splicing. In particular, alternative splicing directly contributes to the diversity of mRNA found in cells. The modifications of primary transcripts have been further studied in research seeking greater knowledge of the role and significance of these transcripts. Experimental studies based on molecular changes to primary transcripts the processes before and after transcription have led to greater understanding of diseases involving primary transcripts.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report