How do enhancers differ from promoters as cis-acting regulatory sequences in eukaryotes?
How do promoters in Archaea and Eukaryotes differ?
What are “cis-regulatory elements,” “trans-regulatory factors,” “exons,” “introns,” “untranslated regions,” “proximal promoters,” “enhancers,” “repressors,” "activators,” “caps,” and “poly-A tails”? Which are protein coding sequence (or are actual proteins); which are not? Which make it into mature mRNA?
Enhancers are said to be cis-acting. What is meant by cis-acting, and what are enhancers? Enhancers are said to be cis-acting. What is meant by cis-acting, and what are enhancers? Essay answers are limited to about 500 words (3800 characters maximum, including spaces). 3800 Character(s) remaining
Enhancers are Select one: 1- regulatory DNA sequences. 2- regulatory proteins.
1. Gene regulatory elements are a) trans-acting transcription factors b) cis-acting transcription factors c) trans-acting DNA sequences d) cis-acting DNA sequences 2. The unwinding of DNA during the initiation of transcription is mediated by the helicase activity by: a) TFIID b) TFIIH c) TFIIF d) TFIIE
Enhancers can regulate genes from a distance, and yet they promoters influence of only some genes changing Insulators are particular enhancers to that control access of potential insulator sequence translatiorn Insulators can be identfied by cloning a promoter and an enhancer and determining the effect on transcription of a between a distant the same at all times at different times static dynamic In humans, insulators bind to with each other to fornm which then interact Enhancers affect transcription from promoters...
1. trans-acting factors are able to regulate target genes from any chromosome, whereas cis-acting elements can only regulate genes located in the same chromosome. a. True only in operons. In Eukaryotic systems, trans-acting factors only regulate genes in the same chromosome. b. True only in Eukaryotes. Prokaryotes don’t have cis-acting elements. c. True for any organism. d. False. The statement is erroneous 2. Unlike activators, repressors never affect chromatin structure. Repressors inhibit transcription only by binding to the binding sites...
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic cells, transcriptional activators often work by recruiting the transcriptional macinery to gene promoters DNA methylation is an example of an epigenetic mark that can be inherited Acetylation of histones can result in a more open chromatin structure to allow transcription to occur Different genes can be turned off or on between different organs or stages of development Transcription factor DNA sequences are bound by...
In the GAL gene system, __________ are cis-acting regulatory elements, and __________ protein is a trans-acting regulatory protein.
Provide two examples of cis-acting regulatory elements.