Which of the following best describes why the polymerase chain reaction is a standard technique used in molecular biology research?
A. It uses inexpensive materials and produces perfect results
B. It can purify specific section of a DNA molecule
C. It can produce large amounts of specific DNA sequences
D. It can duplicate the entire human genome
E. It can produce large amounts of mRNA
Answer: C. It can produce large amounts of specific DNA sequences
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The above figure of a young cuckoo pushing a
resident age out of the nest demonstrates a. imprinting behavior. b. displaying instinctive behavior. c. feeding a social parasite. d. a learned behavior. e. all of these
We can detect the SNP in the ?S allele because it destroys a DdeI restriction site, leading to DNA restriction fragment variation revealed by Southern blot analysis
Either two or three restriction sequences for the restriction endonuclease DdeI can occur near the ?-globin gene, depending on the allele. One DdeI restriction sequence is eliminated from the ?S allele by the SNP in the mutant allele because of a mutation in the double-stranded target sequence 5? - CTNAG - 3?. Suppose the wild-type allele sequence is CCTGAG, while a newly identified SNP is CCTTAG. Would this same restriction fragment analysis technique be appropriate for detecting this particular SNP? What other technique(s) could you use to identify this particular mutation?
What type of graph is this?
A) A bar graph B) A pie chart C) A scatter plot D) A table
The sequence Lys-Asp-Glu-Leu (KDEL) serves as an ER retention signal for proteins by binding to KDEL receptors that
a. hold the proteins in the rough ER. b. hold the proteins in the smooth ER. c. hold the proteins in both smooth ER and rough ER and prevent their transport to the Golgi apparatus. d. transport the proteins from the Golgi apparatus back to the ER.