Lac operon Study guides, Class notes & Summaries

Explain the concepts of penetrance and expressivity Penetrance is the percentage of cases in which a certain phenotype is expressed. There are two types: i. Complete Penetrance: when 100% is correlated to the genotype. So, all express the same thing. ii. Incomplete: this is when some are identical, and others are different. Penetrance= # with genotype showing phenotype x 100 # with the genotype Expressivity is the type or degree to which a penetrant gene ( the genes carrying the mutatio...

QBM Exam Questions And Answers With Complete Solutions 2024 What are the first three steps for starting a project? - answer1 ) Choose 2) Read literature 3) Obtain DNA sequence Once you obtain the DNA sequence in the beginning of a project, BLAST will allow what? - answer"Basic Local Alignment Search Tool" - To search for homology (duplication events) - Can predict protein, molecular weight, pI, and extinction coefficient - Predict the secondary/tertiary structure, transmembrane helice...

Biology 2 Exam Lac Operon Questions And Answers 2023

operon - Answer a series of genes whose expression is co-regulated by controlling their common mRNA transcript lacZ gene - Answer structural gene in lac operon which codes for beta-galactosidase, to break down beta-galactosides (which includes lactose) into glucose and galactose lacY gene - Answer structural gene in lac operon which codes for permease, which transports beta-galactosides into the cell. permeases are membrane bound lacA gene - Answer structural gene in lac operon which co...

BIO 1A03 Midterm 2 Questions and Answers Graded A Prokaryotic growth and cell division -nutrient-rich environment -favorable temperatures Housekeeping genes -genes required at all times for normal function -all ways transcribed and translated -allow constant maintance for general cellular activity -e.g. structural protein of a cell, DNA and RNA polymerase, genes coding for ribosomal proteins -constitutive Regulated genes genes that can be turned on and off at a needed basis Francois Jacob and...

An alteration in the DNA from an AT base pair to a CG base pair is called a ___. - Answer-Transversion An alteration in the DNA from an CG base pair to a TA base pair is called a ___. - Answer-Transition Which repair mechanism(s) involve(s) the removal of a single nucleotide? - Answer-Proofreading repair; base excision repair An insertion of a single base pair in the DNA strand is called a ___ mutation. - Answer-Frameshift Which repair mechanism(s) involve(s) the removal of several nucleoti...

Lac Operon Review Exam Questions And Answers 2023

Final Exam- Lac Operon With Complete Solutions 2023

QBM Exam Questions And Answers With Complete Solutions 2024 What are the first three steps for starting a project? - answer1 ) Choose 2) Read literature 3) Obtain DNA sequence Once you obtain the DNA sequence in the beginning of a project, BLAST will allow what? - answer"Basic Local Alignment Search Tool" - To search for homology (duplication events) - Can predict protein, molecular weight, pI, and extinction coefficient - Predict the secondary/tertiary structure, transmembrane helice...

What will be the effect on transcription when an inhibitor is in play? A. Allow transcription B. Prevent transcription - Answer-B Explanation: An inhibitor prevents activator from binding to DNA; activators are used in positive regulation (increasing transcription) - thus, the inhibitor prevents the activator from positive regulating (increasing) transcription. What will be the effect on transcription when an inducer is in play? A. Allow transcription B. Prevent transcription - Answer-A Ex...