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Study Guide for LS
Study Guide for LS

...  Insertion is when an extra base is added into the sequence.  Deletion is when a base is deleted from the sequence.  Substitution is when one base is substituted for another. A mutation in DNA could result in no change, death or a genetic disorder. A mutagen is something that causes mutations. (E ...
1 Biology 20 Protein Synthesis DNA: How is this linear information
1 Biology 20 Protein Synthesis DNA: How is this linear information

... Sugar: Nitrogenous bases: Strands: Genetic code: (p. 194; Fig. 10.8A) ...
Chapter 4 Review PP
Chapter 4 Review PP

... hormones, nucleolus, enzyme? ...
mutation
mutation

... Pyr ↔ Pu ...
Test Info Sheet
Test Info Sheet

... PLEC1 (601282) (plectin), 226730 (Epidermolysis Bullosa with pyloric atresia, EB-PA (Carmi Syndrome) Clinical features: In this clinical sub-type of JEB, blistering begins in the neonatal period and continues throughout life. Blisters are usually generalized and include oral and esophageal lesions. ...
CAUSE - Cloudfront.net
CAUSE - Cloudfront.net

... Harmful mutations are associated with many genetic disorders and can cause ________________ ____________ cancer ...
NCEA Level 3 Biology - miss-lovell
NCEA Level 3 Biology - miss-lovell

... Downs syndrome is about 100 times more likely to occur in children of mothers over 45, than in those of mothers less than 19 years old. The age of the father on the other hand has a much less marked effect. e) Discuss the reasons that this 'Maternal Age Effect' occurs and the reasons that there is ...
Chapter 21: Molecular Basis of Cancer
Chapter 21: Molecular Basis of Cancer

... methods for scoring previously known mutations or single nucleotide polymorphisms (SNPs) ...
Types of Mutations
Types of Mutations

... beneficial, or it can harm an organism. For example, beneficial mutations lead to evolution, and harmful mutations can lead to diseases like cancer. A mutation, however, is not going to turn you into a superhero! ...
Chapter 34 Study Guide File
Chapter 34 Study Guide File

... 13. Why are most sex-linked traits X-linked traits and not Y-linked traits? ...
DNA Study Guide 1. The sides of a DNA molecule are made up of
DNA Study Guide 1. The sides of a DNA molecule are made up of

... 27. Why does height have such a wide variety of phenotypes? ___________________________________________ 28. Human eyes come in a variety of colors. Explain why eye color is not likely controlled by a single gene. ________ ______________________________________________________________________________ ...
Chapter 13 Mutation, DNA Repair, and Recombination
Chapter 13 Mutation, DNA Repair, and Recombination

... Reverse mutation (reversion)—a second mutation that restores the original phenotype.  Back mutation—a second mutation at the same ...
Protein Synthesis – Level 1
Protein Synthesis – Level 1

... 1. What will be the mRNA that results from transcription? AUGCGGCAUUUAGCACCAUUGCGGUAG 2. If the underlined portions represent introns, what will the mature mRNA be/read? AUGCAUGCAUUGCGGUAG 3. How many codons does this mature mRNA have? How many tRNA anticodons will there be? 6 Codons 4. What anticod ...
Complete DNA Function Vocab with definitions
Complete DNA Function Vocab with definitions

... of genetic information from the cell nucleus to ribosomes in the cytoplasm, where it serves as a template for protein synthesis. It is synthesized from a DNA template during the process of transcription. a triplet of adjacent nucleotides in the messenger RNA chain that codes for a specific amino aci ...
Protein Synthesis Mutation WebQuest
Protein Synthesis Mutation WebQuest

... b. Choose a triplet somewhere in the middle of the DNA strand and make substitutions to the triplet to fit the stop codon nucleotides (use the right click button). c. Make three substitution mutations to the top strand to create the stop codon. Where the stop codon has a U, use a T. d. Synthesize yo ...
Test Info Sheet
Test Info Sheet

... focused array CGH analysis with exon-level resolution (ExonArrayDx) is available is available to detect such deletions or duplications. Mutation spectrum: While mutations have been identified in all 5 exons and intron 2 of EFNB1, the majority (52%) are located in exon 2. Another 20% of mutations ha ...
Comp 5c-2 Packet
Comp 5c-2 Packet

... Change in __________________ caused by change in structure of the DNA Gene mutations can be caused by DNA bases being: When genes are added or removed, the mutation is called a ________ ...
mutation
mutation

... People with XP (usually) lack the excision repair system and as such are very susceptible to skin damage Very susceptible to skin cancer Must be protected from UV radiation ...
Name_____________________ Date__________ Class
Name_____________________ Date__________ Class

... substituted with (or exchanged for) a different nucleotide that may result in an altered sequence of amino acid during translation. occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. is a type of mutation involving the loss of genetic mat ...
Acids and Bases Lab
Acids and Bases Lab

... The man ____ ____ ____ ____ ____ ____ ____ ____ Insert a R after the h  the three letter words should shift down The man hit Delete the I here ...
catalyst
catalyst

... When you are finished, put your pencil down and look up. Remain silent to allow others to finish. Answer the following questions: ...
How Proteins are Made
How Proteins are Made

... B. RNA – ribonucleic acid 1. Contains the sugar ribose (instead of deoxyribose) 2. Is single stranded 3. Has the base uracil (instead of thymine) 4. There are 3 types of RNA a. mRNA – messenger RNA – a portable complement of DNA that travels from the nucleus to the ribosome b. rRNA – ribosomal RNA – ...
Cystic fibrosis
Cystic fibrosis

... Cystic fibrosis (CF) is the most common autosomal recessive disorder among Caucasians of Northern European descent, but can be found in all ethnic groups with varying frequency. CF is characterized by production of thick mucous that clogs respiratory airways. The mucous provides a breeding ground fo ...
Class Presentation Questions 12
Class Presentation Questions 12

... _________________________=mutations that produce changes in a single gene. _________________________=mutations that produce changes in whole chromosomes. A mutation that involves a single nucleotide is called a(an)__________________________. What is a substitution(gene mutation)? How many nucleotide ...
The Secret Code of Life: - Richmond School District
The Secret Code of Life: - Richmond School District

... • On your worksheets, which represents the RNA? Which represents the protein? ...
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Frameshift mutation



A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation caused by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three. Due to the triplet nature of gene expression by codons, the insertion or deletion can change the reading frame (the grouping of the codons), resulting in a completely different translation from the original. The earlier in the sequence the deletion or insertion occurs, the more altered the protein. A frameshift mutation is not the same as a single-nucleotide polymorphism in which a nucleotide is replaced, rather than inserted or deleted. A frameshift mutation will in general cause the reading of the codons after the mutation to code for different amino acids. The frameshift mutation will also alter the first stop codon (""UAA"", ""UGA"" or ""UAG"") encountered in the sequence. The polypeptide being created could be abnormally short or abnormally long, and will most likely not be functional.Frameshift mutations are apparent in severe genetic diseases such as Tay-Sachs disease and Cystic Fibrosis; they increase susceptibility to certain cancers and classes of familial hypercholesterolaemia; in 1997, a frameshift mutation was linked to resistance to infection by the HIV retrovirus. Frameshift mutations have been proposed as a source of biological novelty, as with the alleged creation of nylonase, however, this interpretation is controversial. A study by Negoro et al (2006) found that a frameshift mutation was unlikely to have been the cause and that rather a two amino acid substitution in the catalytic cleft of an ancestral esterase amplified Ald-hydrolytic activity.
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