Frameshift mutations - Study guides, Class notes & Summaries

The LEP gene codes for an anorexigenic hormone. Interestingly, breastfeeding has been shown to alter methylation of the promoter of this gene, leading to increased LEP expression. What is likely happening in response to breastfeeding? - Breastfeeding decreases the methylation of the promoter of the LEP gene, increasing the spacing between nucleosomes. A patient with xeroderma pigmentosum is prone to developing multiple skin cancers starting in childhood. This occurs because of a mutation in...

Virology - Module 11 Hepatitis B Virus (HBV) - correct answer - partially dsDNA that is circular, enveloped, icosahedral shaped capsid, Hepadnaviridae family - packages rev. trans. (aka - RNA dep. DNA pol) HBV Entry to cccDNA Formation - correct answer - attaches to primary cell receptor on hepatocyte (or heprin sulfate). mechanism of entry still unknown (possibly via caveolin). - travels through cell to the nucleus with help of microtubles - core particle (capsid and genome) will bind t...

The LEP gene codes for an anorexigenic hormone. Interestingly, breastfeeding has been shown to alter methylation of the promoter of this gene, leading to increased LEP expression. What is likely happening in response to breastfeeding? - Breastfeeding decreases the methylation of the promoter of the LEP gene, increasing the spacing between nucleosomes. A patient with xeroderma pigmentosum is prone to developing multiple skin cancers starting in childhood. This occurs because of a mutation in...

CMMB 413 Final Exam Actual Questions and Answers with complete solution Types of DNA Variation - answer- single nucleotide variant (SNV) - small nucleotide insertion/deletion - dynamic mutations - microsatellite - copy number variation (CNV) Single Nucleotide Variants (SNVs) - answer- most common type of sequence variation - >3 000 000 per person - can be benign or disease causing Initiation Codon (Start Codon) - answerAUG (methionine) Stop Codons - answerUGA, UAA, UAG 20 - answer...

Mutation Biology Questions and Answers 100% Pass Mutation a change in the genetic material of a cell; cause by a mistake during DNA replication. Gene Mutations changes to a single gene. Point Mutations - involve changes in one or a few nucleotides/bases. involve changes in one or a few nucleotides/bases. Substitutions one base is changed to a different base (May or may not affect the amino acid). Insertions adds a new base to the DNA sequence Deletions removes a base from the DNA sequence ...

DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the new strands - true Recall that the DNA polymerase must bind a double-stranded polymer before it can start making its own DNA polymer. What helps the DNA polymerase to overcome this problem in DNA replication? - RNA primers Several components of cigarette smoke, including benzopyrene, insert themselves into the DNA and lead to several types of mutations such as frameshift mutations, includ...

NURS 6501FINAL EXAM– QUESTION AND ANSWERS CORRECT ANSWERS An aide asks the nurse why people who have neurofibromatosis will show varying degrees of the disease. Which genetic principle should the nurse explain to the aide? Selected Answer: b. Expressivity Correct Answer: b. Expressivity Why is potassium able to diffuse easily in and out of cells? Selected Answer: c. Because the resting plasma membrane is more permeable to potassium Correct Answer: c. Because th...

CMMB 413 Final Exam Actual Questions and Answers with complete solution Types of DNA Variation - answer- single nucleotide variant (SNV) - small nucleotide insertion/deletion - dynamic mutations - microsatellite - copy number variation (CNV) Single Nucleotide Variants (SNVs) - answer- most common type of sequence variation - >3 000 000 per person - can be benign or disease causing Initiation Codon (Start Codon) - answerAUG (methionine) Stop Codons - answerUGA, UAA, UAG 20 - answer...

Bio 181 Exam 4 - Dr. A "Molecular Translator", correspondence between codons and amino acids - correct answer Genetic code What is the start codon and what does it code for? - correct answer AUG; methionine (MET) shared and used by almost all organisms living and extinct? - correct answer Universal Each codon specifies for only 1 amino acid - correct answer unambiguous a given amino acid can be specified by more than 1 codon - correct answer redundant codons that specify for th...

DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the new strands - true Recall that the DNA polymerase must bind a double-stranded polymer before it can start making its own DNA polymer. What helps the DNA polymerase to overcome this problem in DNA replication? - RNA primers Several components of cigarette smoke, including benzopyrene, insert themselves into the DNA and lead to several types of mutations such as frameshift mutations, includ...