Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 15, Problem 3TY
Summary Introduction
Introduction: The occurrence of mutation in cell results in the decreased activity of cellular
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Sickle cell anemia is a disease caused by a mutation at the genotypic level. A person with two copies of the gene has the disease, but a person with one copy of the gene does not have the disease. The diagram shows how this mutation affects an organism.
Use the image to answer the question.
Which conclusion can you draw based on the diagram?
A.
The mutation changed the amino acid sequence during the translation step.
B.
A mutation caused the information in DNA to change during the transcription step.
C.
A change in the DNA sequence can be carried over to the translation and transcription steps.
D.
The change that affected the translation and transcription steps does not affect the organism.
With regard to transcriptional termination in eukaryotes, which model suggests that RNA polymerase is physically removed from the DNA?
a. Allosteric model
b. Torpedo model
c. Both models
d. Neither model
A student wants to observe how the environment of bacteria affects gene expression. How should the experiment be designed?
A.
exposing the same species of bacteria to the same carbohydrates in each sample
B.
exposing the same species of bacteria to different carbohydrates in each sample
C.
exposing different species of bacteria to the same carbohydrates in each sample
D.
exposing different species of bacteria to different carbohydrates in each sample
Chapter 15 Solutions
Biology
Ch. 15.1 - Consequences of Mutations Concept Check: Based on...Ch. 15.1 - Prob. 2CCCh. 15.2 - Prob. 1EQCh. 15.2 - Prob. 2EQCh. 15.2 - Prob. 3EQCh. 15.2 - Prob. 1CCCh. 15.3 - DNA Repair Concept Check: Which components of the...Ch. 15.3 - Why is this person so sensitive to sunlight?...Ch. 15.4 - Prob. 1CCCh. 15.4 - Prob. 2CS
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.4 - Prob. 4CCCh. 15 - Prob. 1TYCh. 15 - Prob. 2TYCh. 15 - Prob. 3TYCh. 15 - Prob. 4TYCh. 15 - Prob. 5TYCh. 15 - The Ames test a. provides a way to determine if...Ch. 15 - Xeroderma pigmentosum a. is a genetic disorder...Ch. 15 - Prob. 8TYCh. 15 - Prob. 9TYCh. 15 - Prob. 10TYCh. 15 - Prob. 1CQCh. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 1COQCh. 15 - Distinguish between spontaneous and induced...
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- Give 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_forwardWhich method is used to obtain mutants that grow under conditions that the wild type parent cannot grow? a)indirect selction b) direct selection c) screening for possible mutagen ( carcinogens) d) replica platingarrow_forwardWhich DNA regulatory sequence speeds up transcription? a promoter b repressor c silencer d enhancerarrow_forward
- a) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to control gene expression?arrow_forwardProteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c. operators b. transcription factors d. enhancersarrow_forwardUsing an example, explain why some mutations are not harmful.arrow_forward
- The role of p53 in normal cells is toa. create cancer-blocking mutations.b. trigger unrestrained cell division.c. detect damaged DNA.d. splice exons together in the correct sequence.arrow_forwardYou are curious to identify the region of the gene X sequence that serves as an enhancer for gene expression. Design an experiment to investigate this issue.arrow_forwardWhat type of mutation causes the "mutant" variety of the PTC gene? a A point mutation which lead to a nonsense mutation b A addition mutation which lead to a frameshift c A substitution mutation which lead to a missense mutation d A deletion mutation which lead to a SNP mutationarrow_forward
- a) Define the term gene expression b) State 4 difference between prokaryotes and eukaryotes gene expression c) state the importance of regulating gene expressionarrow_forwardWhy would a scientist wish to induce mutations? a. to increase the number of mutated phenotypes b. to create mutations in specific genes c. to test for carcinogen activity d. to create tumors for cancer research e. because she was crazier than a mutated bedbugarrow_forwardDesign an experiment to determine whether a specific gene is transcribed by RNA polymerase II.arrow_forward
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