A single base mutation occurs in a gene that codes for a protein due to an error in DNA replication. Which of the following outcomes is not possible?
A) The mutation results in changed protein function.
B) The mutation results in a longer or shorter protein or a protein of the same length.
C) The mutation results in a human disease such as sickle-cell disease.
D) The mutation results in mRNA being made from the protein.
Answer: D
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The more closely related two organisms are,
A. the less they look alike. B. the more similar the nucleic acid sequence. C. the less similar the nucleic acid sequence. D. the more they are phenotypically similar. E. the more similar the nucleic acid sequence AND the more they are phenotypically similar.
Define and give an example of divergent evolution
What will be an ideal response?
What is an example of a plant disease caused by a basiodiomycete?
a. wheat rust b. ergot of rye c. chestnut blight d. Dutch elm disease e. verticillium wilt on potatoes
Which of the following statements about genomic DNA libraries is false?
(a) The larger the size of the fragments used to make the library, the fewer colonies you will have to examine to find a clone that hybridizes to your probe. (b) The larger the size of the fragments used to make the library, the more difficult it will be to find your gene of interest once you have identified a clone that hybridizes to your probe. (c) The larger the genome of the organism from which a library is derived, the larger the fragments inserted into the vector will tend to be. (d) The smaller the gene you are seeking, the more likely it is that the gene will be found on a single clone.