Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 18, Problem 9TYK
A eukaryotic gene typically has all of the following associated with it except
- a. a promoter.
- b. an operator.
- c. enhancers containing distal control elements.
- d. introns and exons.
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Which of the following best represents the central dogma of geneexpression?a. During transcription, DNA codes for polypeptides.b. During transcription, DNA codes for mRNA, which codes forpolypeptides during translation.c. During translation, DNA codes for mRNA, which codes forpolypeptides during transcription.d. none of the above
Which sequence is most likely to be found in a promoter?
a) CGGTGTATATCGTAC
b) GTACAGTCATCCCGT
c) AAATCTACTACGATT
d) GGGTTGGGTTGGGTT
. Discuss how mutations may arise in DNA, and the potential consequences for gene function if a point mutation were to occur in (a) the coding region of a gene, and (b) the non-coding regulatory region of a gene.
Chapter 18 Solutions
Biology - Study Guide
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- Which of the following is true of transcription factors? A)The same transcription factors are found in all cell types. B)They can increase or decrease gene expression. C)They are a type of cis-acting element. D)They bind only to promoters.arrow_forwardGive two DIFFERENT examples of how the following can occur:a. A point mutation in an exon that is silent.b. A point mutation in an exon that is NOT silent.c. A point mutation in an intron that is NOT silent.d. A point mutation in a promoter that is NOT silent.arrow_forwardIf a mutation deletes the promoter in a eukrayotic gene, which of the following most accurately describes its consequence? A. There will be no mRNA or polypeptide made. B. The mRNA will be made but no polypeptide is made. C. The mRNA will not be processed properly. D. Nothing will happen. It is a silent mutation.arrow_forward
- A certain Drosophila protein-encoding gene has one intron. If a large sample of null alleles of this gene is examined, will any of the mutant sites be expecteda. in the exons?b. in the intron?c. in the promoter?d. in the intron–exon boundary?arrow_forwarda) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to control gene expression?arrow_forwardThe -10 and -35 regions of prokaryotic promoters are called consensus sequences because ________. a. they are identical in all bacterial species b. they are similar in all bacterial species c. they exist in all organisms d. they have the same function in all organismsarrow_forward
- Introns are: Considered "non-coding" regions Located in the promoter regions of genes Found in prokaryotes A and B A, B, and Carrow_forwardWhich of the following is characteristic of genes and gene regulation in both bacteria and eukaryotes? (a) promoters (b) non-coding DNA within coding sequences (c) enhancers (d) operons (e) DNA located in a nucleusarrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forward
- If you want to express a eukaryotic gene in a bacterial cell, you ned to (select all that apply): a.) add a bacterial promoter in front of the gene b.) remove introns from the gene c.) add a polyA tail sequence d.) add eukaryotic tRNAsarrow_forwardWhen would a ribosome bind to a promoter sequence? A) It wouldn't. A promoter is a DNA sequence, and ribosomes don't bind to DNA. B) When the ribosome needs to transcribe the gene that that promoter controls. C) When the ribosome is translating the DNA sequence of a gene. D) When there is a start codon (AUG) in the promoter sequence. .arrow_forwardWhich of the following characteristics is typical of a eukaryotic gene that can be transcribed? a. The core promoter is wrapped around a nucleosome. b. The core promoter is found in a nucleosome-free region. c. The terminator is wrapped around a nucleosome. d. None of the above characteristics is typical of such a gene.arrow_forward
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