Allolactose to repressor - Study guides, Class notes & Summaries

ASU BIO 340 Exam 3 | WITH QUESTIONS AND ANSWERS 100% VERIFIED What will be the effect on transcription when an inhibitor is in play? A. Allow transcription B. Prevent transcription - 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. A...

TAMU bio 111 lab exam 2 review (2023/2024) already passed What is the difference between the coding and non-coding region? Coding region: comprised of genes that encode proteins (instructions that determine traits) and makes up 1-2% of human DNA. • Noncoding region: makes up 98-99% of human DNA, contains STRs and is responsible for regulatory functions such as gene transcription. What are STRs? Short-tandem repeats (STRs) are unique repeating patterns of the same nucleotide sequence. They can...

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...

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...

Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide Questions With Answers. 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 # wit...

The tryptophan operon is a repressible operon that is: - ANSWER-Turned off whenever tryptophan is added to the growth medium. The lactose operon is likely to be transcribed when: - ANSWER-The cyclic AMP and lactose levels are both high within the cell. For a repressible operon to be transcribed, which of the following must occur? - ANSWER-RNA polymerase must bind to the promoter, and the repressor must be inactive. Which of the following, when taken up by the cell, binds to the represso...

What enhances the expression of a gene? - the attachment of RNA polymerase to DNA Describe what happens when the lactose operon is turned on and transcribing. - Allolactose or lactose binds to and changes the shape of the repressor. Genes A,B,C, and D are located on the same chromosome. Testcrosses show that the recombination frequency between A and B is 36% and between A and C is 23%. The recombination frequency between C and D is 5% and between A and D is 18%. What is the correct sequenc...

BIO 214 EXAM 3 Practice EXAM 57 Questions with Verified Answers In the lac operon, CAP binding to the CAP site of the promoter ____. a. occurs when glucose is present b. inhibits RNA polymerase from binding to the promoter c. occurs when cAMP is absent d. helps the repressor protein bind to the operator e. enables RNA polymerase to transcribe the operon's genes - CORRECT ANSWER enables RNA polymerase to transcribe the operon's genes Gene regulation in both prokaryotes and eukaryotes...

iology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide. 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 Expressi...

Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide 2024/2025. Review discussion about Breast Cancer Breast Cancer (BRCA1 and BRCA2) c. Provides instructions for making a protein that acts as a tumor suppressor d. Prevents cells from growing and dividing e. Accounts for 30-40% of families with breast cancer cases Penetrance and BRCA a. Refers to the risk of developing breast and ovarian cancer b. A reliable estimate of penetrance is crucial for medical co...