• Study Resource
  • Explore
    • 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
Prok transcription
Prok transcription

... enzyme is potentially capable of copying DNA from any source to RNA  In order to initiate transcription with high efficiency on bacterial promoters, the enzyme must combine with another polypeptide unit, - a sigma factor  the sigma factor increases the selectivity of the bacterial RNA polymerase f ...
INTERPRO An integrated resource of protein families
INTERPRO An integrated resource of protein families

Slide 1
Slide 1

... What makes RNA so powerful? • It can fold up • Some of its bases can catalyze chemical reactions • It is highly specific (i.e., complementary) tRNA ...
Huntington`s Chorea: Evolution and Genetic Disease http://evolution
Huntington`s Chorea: Evolution and Genetic Disease http://evolution

... In 1993, a collaborative research group discovered the culprit responsible for Huntington's: a stretch of DNA that repeats itself over and over again, CAGCAGCAGCAG... and so on. People carrying too many CAGs in the Huntington's gene (more than about 35 repeats) develop the disease. In most cases, th ...
Enzymes involved in DNA replication Enzyme Role Helicase or
Enzymes involved in DNA replication Enzyme Role Helicase or

Biostructures and Molecular Modelling in Drug Research
Biostructures and Molecular Modelling in Drug Research

... alternative methods for the determination of three­dimensional structures and biologically relevant targets.  The term, molecular modelling, comprises a variety of computer­based methods used to construct three­dimensional models of chemical compounds, and to calculate a number of different characte ...
Rampant Adaptive Evolution in Regions of Proteins with Unknown
Rampant Adaptive Evolution in Regions of Proteins with Unknown

... codons that overlapped multiple domains were counted a single time. Overall, in these analyses we have data for 5,838 genes with defined domains that are comprised of 17,935 total domains, 1,013 of which are unique domain types. We used contrasts of polymorphic and fixed, synonymous and nonsynonymou ...
Structure of Macromolecules Dr. Nakhshab
Structure of Macromolecules Dr. Nakhshab

... The phosphate functional group has a negative electric charge, so this portion of the molecule is hydrophilic, attracting polar water molecules. But the two fatty acids are hydrophobic, so they tend to aggregate away ...
幻灯片 1 - Springer Static Content Server
幻灯片 1 - Springer Static Content Server

... http://omicslab.genetics.ac.cn/GOEAST/index.php, and the GO enrichment results together with their p-values (<0.05) utilized for the treemap analysis at http://revigo.irb.hr. The size of each area calculated according to the formula abs(log10(p-value)). (b): Treemap of molecular functions at DAG25 u ...
9.4 DNA-Binding Proteins
9.4 DNA-Binding Proteins

... • R-O complex DNA deviates from normal shape • DNA bends to accommodate base /aa contacts • Central part of helix is wound extra tightly • Outer parts are wound more loosely than normal • DNA sequence of operator facilitates bending ...
Alteration in DNA methylation and its transgenerational inheritance
Alteration in DNA methylation and its transgenerational inheritance

... the plant Arabidopsis thaliana differ in many epialleles, and these can influence the expression of nearby genes. However, to understand their role in evolution, it is imperative to ascertain the emergence rate and stability of epialleles, including those that are not due to structural variation. We ...
Document
Document

4.4 PCR, Electrophoresis, DNA profiling
4.4 PCR, Electrophoresis, DNA profiling

... 4.4.2 State that, in gel electrophoresis, fragments of DNA move in an electric field and are separated according to their size. ...
What is Biotechnology?
What is Biotechnology?

... technique, which makes unlimited copies of genes and gene fragments, is conceived. Kary Mullis, who was born in Lenoir, N.C., wins the 1993 Nobel Prize in Chemistry for the discovery. He became interested in science as a child when he received a chemistry set for Christmas. ...
Cellulase gene cloning
Cellulase gene cloning

... obtained. RNA was extracted using the hot-phenol method as previously described (1). For cDNA synthesis, the extracted RNA (10 μg) was first treated with DNaseI (Promega, Madison, USA) as per manufacturer’s instructions and then reversed transcribed into cDNA using the one-step High-capacity cDNA Re ...
Transcription Study Guide
Transcription Study Guide

... complementary - matching, such as between pairs of nucleotides in a DNA molecule cytidine - one of the nucleotide bases in which cells store their genetic code. Cytidine bonds with guanosine in both DNA and RNA. DNA - the molecule that stores and encodes an organism’s genetic information. DNA is a ...
Chapter 7
Chapter 7

The Genetic Code and Translation
The Genetic Code and Translation

... – There are 64 different codons, but only 20 amino acids. (So, there may be more than one codon for an amino acid.) – AUG codes for methionine (the “start” codon) • Signals the beginning of protein production ...
Document
Document

... • Discovered in late 1970s by Arber, Smith and Nathans • The chemical bonds that the enzymes cleave can be reformed by other enzymes known as ligases • Uses: – To insert new segment of DNA – To cut specific segments of DNA to study – To cut segment from one gene to insert it into another • Genetic e ...
Gene Expression - Bioinformatics and Genomics Department at CIPF
Gene Expression - Bioinformatics and Genomics Department at CIPF

... • Selection of differentially expressed genes among the phenotypes / experiments. Did I select the relevant genes, all the relevant genes and nothing but the relevant genes? (specificity) • Biological roles the genes are carrying out in the cell. What general biological roles are really represented ...
BIOCHEMISTRY - Mexico Central School District
BIOCHEMISTRY - Mexico Central School District

... There are an extremely large number of different proteins in life! Protein variety comes from: • Differences in the number of amino acids in the chain • Types of amino acids in the chain • Arrangement of amino acids in the chain ...
The On’s and Off’s of Gene Expression
The On’s and Off’s of Gene Expression

... – Genes in the pigment pathway are turned on by the purple plant (PL1) transcription factor. – PL1 is expressed only in plant organs, not in the ...
Questions 33-38
Questions 33-38

Ch. 13 Genetic Engineering
Ch. 13 Genetic Engineering

... Increasing Variation In order for selective breeding to be successful, there must be a lot of genetic variation in the population Breeders increase the genetic variation in a population by inducing mutations, which are the ultimate source of genetic variability ...
Biological Sequences: DNA, RNA, Protein
Biological Sequences: DNA, RNA, Protein

... • apparently passive, but very important role of proteins • provide strngth and protection to cells and tissues • monomeric units of structural proteins typically polymerize to generate long fibers (as in hair) or protective sheets of fibrous arrays • collagen is an important fibrous protein found i ...
< 1 ... 169 170 171 172 173 174 175 176 177 ... 401 >

Molecular evolution

Molecular evolution is a change in the sequence composition of cellular molecules such as DNA, RNA, and proteins across generations. The field of molecular evolution uses principles of evolutionary biology and population genetics to explain patterns in these changes. Major topics in molecular evolution concern the rates and impacts of single nucleotide changes, neutral evolution vs. natural selection, origins of new genes, the genetic nature of complex traits, the genetic basis of speciation, evolution of development, and ways that evolutionary forces influence genomic and phenotypic changes.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report