which of these is a regulatory gene?
A, B, C, D, E, ?
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory protein an activator or repressor? B. Explain how an effector molecule, which binds to the regulatory protein, alters the regulatory protein’s ability to regulate expression of the gene. 2. (1 pt) Cis and trans are two terms used to describe mutations. A. Explain the molecular difference between these terms. B. indicate which type of mutation (cis or trans) is dominant to wild-type and which...
Given a chromosome with the gene order, A B C D ∙ E F G H, and an inverted chromosome with this gene order, A F E ∙ D C B G H, which of the following recombinant chromosomes would result from a crossover between C and D? A) A B C C B G H and H G F E ∙ D C B G H B) A B C D ∙ E F A and H ∙ G...
A reporter gene is an experimentally engineered regulatory DNA sequence from a gene of interest that has been fused to a gene that encodes a protein that is easily observed experimentally. Why is this approach useful? a. It provides information on the binding interactions of the gene product. b. It provides information into where and when a gene is expressed. c. It can provide information as to where a gene is expressed. d. It can provide information as to when...
Lac Promoter i promoter galactoside transacetylase gene E coll chromosome lac operon loc terminator regulatory gene Operator site (laco) CAP site Lactose permease gene Beta-galactosidase gene
A B C D E F G H I gene - estrogen + estrogen (fig74) Gene expressed higher in tumor vs normal cells Gene expressed lower in tumor vs normal cells Gene expressed the same in tumor vs normal cells Gene expressed neither in tumor nor normal cells The figure above shows a portion of the results from an experiment comparing the mRNA levels determined by RNAseq in cells extracted from an ovarian tumor to normal ovary cells. Both groups...
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
Which of the following is NOT true of the Rb protein? a. It inhibits gene expression by binding to a gene regulatory protein. b. In the absence of mitogen it promotes cell proliferation. c. Its activity is controlled by phosphorylation. d. It is a tumor suppressor protein. e. None of the above (= all of the above are true).
You are studying the regulatory DNA of a mouse gene expressed in developing heart, liver, and lung tissue. Your preliminary work has shown that heart and lung expression of this gene is controlled by a short fragment of DNA just upstream of the promoter. Based on this result, you decide to investigate this region further to understand its function. You decide to compare this sequence to the regulatory DNA of the same gene found in rats and humans. Using genome...
What are transcription factors? regulatory DNA sequences that bind to the promoter region of a gene regulatory DNA sequences that bind to a protein regulatory motifs that bind to the promoter region of a gene regulatory proteins that bind to specific DNA sequences
Question 1 topic: Gene regulatory networks. Use the figure and information in the figure legend to answer the questions. (20 points) a) What genes in this network are expressed in the skeletogenic lineage? b) If you knockdown Rp1, what gene(s) is/are expressed in all cells? What would be the resulting phenotype of the sea urchin embryo? c) If you knockdown Rp2, what gene(s) is/are expressed in all cells? What would be the resulting phenotype of the sea urchin embryo? d)...