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2009 Neurogenetic Self-Assessment.pps
2009 Neurogenetic Self-Assessment.pps

... 1. Absence of family history argues against Wilson’s disease 2. Dysarthria and behavioral disturbance are the most common presenting neurologic symptoms 3. Is characterized by high serum ceruloplasmin and low urine copper excretion. 4. Both Wilson’s disease and Menke’s disease are due to copper ATPa ...
PDF+Links
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... general increase in the number of epidemiological research articles that apply basic science methods in their studies, resulting in what is known as both molecular and genetic epidemiology, is evident. Actually, genetics has come into the epidemiological scene with plenty of new sophisticated concep ...
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... To understand how invaluable SNPs are in tracking down mutations that cause disease, you have to appreciate the immense size of genome. Consider this: if each of the DNA molecules in our genome was about the size of a ping pong ball, the long unraveled chain of molecules would circle the earth 3 tim ...
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A gain-of-function TBX20 mutation causes congenital atrial septal

... Background Ostium secundum atrial septal defects (ASDII) account for approximately 10% of all congenital heart defects (CHD), and mutations in cardiac transcription factors, including TBX20, were identified as an underlying cause for ASDII. However, very little is known about disease penetrance in f ...
Does immunodominance maintain the diversity of the common cold?
Does immunodominance maintain the diversity of the common cold?

... HRV Cross-Reactivity  Cross-reactivity is the ability of B and T cells to react with an epitope on the antigen that they are not designated for.  A single HRV serotype is, on average, related to 3.75 other serotypes (Cooney et al., 1975).  Therefore, related serotypes may elicit similar immune r ...
chakravartiLab
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... Use chip data first in linkage study, then use same data with transmission-disequilibrium-test for association study within candidate regions. • Have found some relatively common varients that contribute to risk. • Colleagues at UCLA have found rarer, higher risk variants. ...
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Lecture 10: Learning - Genetic algorithms

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Ch. 10- Structure and Analysis of DNA and RNA p. 262-288
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GRECC Genetics of Alzheimer`s 2013 10-4
GRECC Genetics of Alzheimer`s 2013 10-4

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BreastNext: A 17-Gene Hereditary Breast Cancer Test

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Heterogeneous lengths of copy number mutations
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Lecture 5: Genetic interactions and epistasis A. Epistasis in a

... For biosynthetic pathways, the phenotype of the earlier gene in the pathway shows in the double mutant. ie. the earlier-step mutant is epistatic to the late-step mutant Determine relationship between a1 and c2 by feeding experiment: add flavanone (naringenin): c2+naringenin = red a1+naringenin = col ...
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DNA, RNA, and PROTEIN SYNTHESIS SUMMERY QUESTIONS

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the law of dominance
the law of dominance

... 1. A population of grass is spreading out of control in southern California. A scientist studying this grass is trying to determine if the population is evolving and if the grass is likely to slow its spread as time passes. She determines that traits found in the current generation of grass individu ...
Biology 321 Spring 2013 Assignment Set 7 Reading Assignments in
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... sites in human DNA resulting from variable numbers of tandem nucleotide repeats. Several suspect chimp offspring and their supposed parents were tested to determine if the offspring were "legitimate" or were the "product of the illegal trading" and not the offspring of the putative parents. A sample ...
Mendelian Genetics in Populations – 1
Mendelian Genetics in Populations – 1

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ENG - Hong Kong Academy of Medicine
ENG - Hong Kong Academy of Medicine

... What is BRCA gene mutation? Is it common in Hong Kong? BRCA gene mutation is one of the known genetic factors that would raise the risks of developing certain cancers. It can be further subdivided into BRCA 1 and BRCA 2 mutations. According to the latest local data, there are only 8.5% of 914 select ...
The New World of Clinical Genomics
The New World of Clinical Genomics

... give sufficient linkage information. As demonstrated by Dauber et al. (6), by using MPS, one can identify potential pathogenic sequence variants with a single family with just two affected individuals. However, because MPS does not limit the region of interest as did meiotic mapping, it identifies t ...
Horvitz et al 1979
Horvitz et al 1979

... Different genes within the same general category are distinguished by different italicized Arabic numbers, which are separated from the general name by a hyphen (-). For example, unc-15 and unc-54 are different genes. When appropriate, gene names can include an italicized Roman numeral (I, II, III, ...
paper
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... (retinoblastoma)29. The inconsistencies are not surprising in view of ascertainment problems and the statistical uncertainties of small numbers. Mosaicism might be another factor diluting the paternal age effect. The geometric mean of these ratios is about ten — probably an underestimate. Neverthele ...
Organization of Genes Differs in Prokaryotic and Eukaryotic DNA
Organization of Genes Differs in Prokaryotic and Eukaryotic DNA

... ------------ encode a.a bind tightly to proteins in fibroblast plasma membrane. Alternative splicing of fibronectin primary transcript in hepatocytes, lack EIIIA & EIIIB exons-----does not adhere tightly to fibroblasts ----- circulate in blood. formation of blood clots , domains of hepatocyte fibron ...
Model Organisms pre-class activity: Huntington disease
Model Organisms pre-class activity: Huntington disease

... If a father has between 27 and 35 repeats in his gene, this chromosome can gain repeats when the sperm enters the egg and begins to form an embryo. If this chromosome ends up with more than 40 repeats, the child will develop the disease. 6. (a) Draw a Punnett square showing a cross between an unaffe ...
What Do Genes Look Like? - Effingham County Schools
What Do Genes Look Like? - Effingham County Schools

... 3. The amount of Adenine = Thymine, Cytosine = Guanine (Chargaff’s Rule) ...
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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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