You are interested in studying the function of a gene, so you decide to create point mutations to help you identify important residues in your protein
Using the underlined adenine in the following sequence, how could you mutate the sequence to create a silent transversion mutation? 5?-ATG GGA TGG CAC CTG-3?
A to G or C or T
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Scientists have been able to clone
a. sheep. b. cats. c. rabbits. d. pigs. e. all of these.
Biologists study the diversity of life in many ways except the observation of:
A. DNA B. behavior C. supernatural D. fossils
In horsetails, lycophytes, and whisk ferns, ____.
A. spores give rise to photosynthetic gametophytes B. the main plant body is a gametophyte C. the sporophyte bears sperm- and egg-producing organs D. the gametophyte is the dominant stage in the life cycle E. the gametophyte produces spores
You are studying the affects of transcription factors on the activation of gene expression. However, when first starting your study, you notice that some of the transcription factors bind further away from the DNA that it is aiming to transcribe. What description best explains this?
A. The transcription factor transcribes small RNAs that then bind to the promoter and activate the gene's expression. B. The assistance of RNA looping moves the transcription factor closer to the promoter. C. DNA looping transports the transcription factor closer to the promoter and initiates gene transcription. D. Signals originate via inducers from the transcription factor to the site of promotion that activate transcription of the gene.