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Genetics unit study guide (notes)
Genetics unit study guide (notes)

... 1st Division (Meiosis I). Here is where the critical difference occurs between meiosis and mitosis. In the latter, all the chromosomes line up on the metaphase plate in no particular order. In Metaphase I, the homologous chromosome pairs are aligned on either side of the metaphase plate. It is durin ...
Somaclonal Variations
Somaclonal Variations

... • Pre-existing variations in the somatic cells of explant • Caused by mutations and other DNA changes • Occur at high frequency 2. Epigenetic (Non-heritable Variations) • Variations generated during tissue culture • Caused by temporary phenotypic changes • Occur at low frequency ...
basic features of breeding
basic features of breeding

...  Sexual recombination in fish might occasionally happen in nature, but most were conducted artificially  The principle of artificial sexual recombination is to impose the male and female gametes of different fishes to fuse together as a zygote by artificial methods that does not happen in natural ...
Chapter 12
Chapter 12

... 6. Explain how different organisms are used to massproduce proteins of human interest. 7. Explain how DNA technology has helped to produce insulin, growth hormone, and vaccines. 8. Explain how genetically modified (GM) organisms ...
Mutation Notes
Mutation Notes

basic e. coli information for molecular biology
basic e. coli information for molecular biology

... translocation and reducing protein production in cells. Kanamycin resistant plasmids code for the kanamycin B resistance (also known as neomycin phosphotransferase II; NEO) gene. The enzyme will phosphorylate kanamycin, rendering the drug inactive to bind and inhibit 70S ribosomal function. Ampicill ...
Ch 20 Biotechnology - juan-roldan
Ch 20 Biotechnology - juan-roldan

... Gel Electrophoresis and Southern Blotting • One indirect method of rapidly analyzing and comparing genomes is gel electrophoresis • This technique uses a gel as a molecular sieve to separate nucleic acids or proteins by size, electrical charge, and other properties • A current is applied that cause ...
Exam Procedures: this isBMB 526 Exam #1 11/5/12 this is form A
Exam Procedures: this isBMB 526 Exam #1 11/5/12 this is form A

... C. a histone acetyl transferase D. a CAP (catabolite gene activator protein)-binding site E. an operator Questions 28 and 29 refer to two patients in a Case Study, designated as Case A. 28. A 2-day-old boy exhibits extreme lethargy and hyperventilation. Complete blood count (CBC) report documented m ...
recombinant DNA - juan
recombinant DNA - juan

... Gel Electrophoresis and Southern Blotting • One indirect method of rapidly analyzing and comparing genomes is gel electrophoresis • This technique uses a gel as a molecular sieve to separate nucleic acids or proteins by size, electrical charge, and other properties • A current is applied that cause ...
The Discovery of Messenger RNA
The Discovery of Messenger RNA

... Ribosomes and Protein Synthesis Research in the matter pointed towards RNA involvement in the protein synthesis process. The discovery of ribosomes shed a further illuminating light on how proteins are formed. Ribosomes are ribonucleoprotein cell particles found in the cell cytoplasm, and their RNA ...
Structure of the human DNA repair gene HAP1 and its localisation to
Structure of the human DNA repair gene HAP1 and its localisation to

... principally because the gene contains only four introns of which three are less than 220 bp in length. One of these introns lies within the 5' non-coding region and thus the ATG initiation codon is located within the second exon. Amino terminal amino acid sequencing indicated that the proposed ATG i ...
File - Mr. Banks
File - Mr. Banks

... flower color is codominant. ___________________________________________________________ Explain what would happen if a purebred black cow was crossed with a purebred white cow if the gene for cow fur color is incomplete dominant. ___________________________________________ What does DNA stand for? _ ...
Five main classes of repetitive DNA
Five main classes of repetitive DNA

... We used 100,000 base pairs of human DNA. The pipeline correctly identified several exons of RBP4, but failed to generate a complete gene model. As another example, initial annotation of the rice genome yielded over 75,000 gene predictions, only 53,000 of which were complete (having initial and termi ...
AP & Regents Biology
AP & Regents Biology

...  Many carriers of this mutant allele are not aware that they have it ...
Chapter 7 Notes: DNA Profiling
Chapter 7 Notes: DNA Profiling

... • 1987 – Dr. Alec Jeffries (U. of Leicester, U.K.) conducted the first forensic personal identification of a suspect based on a technique he called DNA fingerprinting – We now call DNA Profiling or DNA Typing, and it has been improved utilizing newer technology • Polymorphisms are used to distinguis ...
Genomic DNA Isolation from 1 µL – 100 µL of Whole
Genomic DNA Isolation from 1 µL – 100 µL of Whole

student - Shawnee Science
student - Shawnee Science

Cell Cycle PPT `14
Cell Cycle PPT `14

...  Adenine pairs with Thymine, and Guanine pairs with Cytosine  The complimentary bases are held together by weak hydrogen bonds.  (No matter what organism it is!!!!) ...
RNA Polymerase II analysis in Drosophila Melanogaster
RNA Polymerase II analysis in Drosophila Melanogaster

... The principle is that DNA-binding proteins in cells are cross-linked to the DNA that they are binding. By using a specific antibody, we can immunoprecipitate the protein–DNA complex. After the crosslinking, the cells are bursted and the DNA is broken into pieces by sonication. The DNA is purified wi ...
Jonas Korlach, Ph.D.
Jonas Korlach, Ph.D.

... • Resolving the various forms of structural genomic variation, longrange haplotype phasing • Ability to identify modified DNA bases for epigenetic studies • Ability to perform full-length transcript sequencing to identify isoforms and splice variants • Full-length 16S rRNA sequencing and long-read f ...
How many chromosomes are shown in a normal human karyotype?
How many chromosomes are shown in a normal human karyotype?

... XX ...
Document
Document

... material and forcing the bacteria to reproduce viruses instead of their own genetic material. The phage is very simplistic and is composed of only a protein covering and a small piece of DNA inside the protein covering. Purpose: The purpose of this experiment was to determine what material is respon ...
Chapter 27
Chapter 27

... 4. Triploid: having 1 extra of every homologous pair (69) chromosomes) 5. Polyploidy- sometimes all 22 chromosomal pairs fail to separate. The resulting 2n gamete fuses with the normal n gamete, producing a 3n zygote. This is common in plants but rare in humans ...
Cellular Respiration
Cellular Respiration

... • What is the Genotypic Ratio: ...
Molecular Biology Fourth Edition
Molecular Biology Fourth Edition

... Certain DNA Sequences Adopt Unusual Structures • Other sequence-specific DNA structures have been detected, within larger chromosomes, that may affect the function and metabolism of the DNA segments in their immediate vicinity. • For example, certain repetitive sequences can bend the DNA helix in a ...
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Cre-Lox recombination



In the field of genetics, Cre-Lox recombination is known as a site-specific recombinase technology, and is widely used to carry out deletions, insertions, translocations and inversions at specific sites in the DNA of cells. It allows the DNA modification to be targeted to a specific cell type or be triggered by a specific external stimulus. It is implemented both in eukaryotic and prokaryotic systems.The system consists of a single enzyme, Cre recombinase, that recombines a pair of short target sequences called the Lox sequences. This system can be implemented without inserting any extra supporting proteins or sequences. The Cre enzyme and the original Lox site called the LoxP sequence are derived from bacteriophage P1.Placing Lox sequences appropriately allows genes to be activated, repressed, or exchanged for other genes. At a DNA level many types of manipulations can be carried out. The activity of the Cre enzyme can be controlled so that it is expressed in a particular cell type or triggered by an external stimulus like a chemical signal or a heat shock. These targeted DNA changes are useful in cell lineage tracing and when mutants are lethal if expressed globally.The Cre-Lox system is very similar in action and in usage to the FLP-FRT recombination system.
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