5'-ATAGGGCTT-3' is a short sequence of a strand of DNA. What will be the complementary sequence of the other strand? What will be the complementary mRNA sequence derived from the second strand of DNA? Be sure to indicate the 5' or 3' ends of each sequence
What will be an ideal response?
Answer: Complementary DNA: 3' TATCCCGAA5' or 5'AAGCCCTAT3'
Complementary mRNA: 5'AUAGGGCUU3'
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I) terrestrial ecosystems II) oceans III) atmosphere A) only I B) only II C) only III D) only I and III E) I, II, and III
You've just isolated a new bacterium in pure culture, and you culture it on a general purpose medium where its cells have a rod-shape (bacillus) morphology. In addition to culturing it on solid media, you inoculate a slide to grow it as a biofilm. When you use confocal microscopy to image the biofilm, you observe that there are several cellular morphologies, ranging from coccus to coccobacillus to long bacillus. The best explanation for this observation is that
A. the confocal microscope is out of adjustment. B. the biofilm is no longer a pure culture of the microbe. C. the biofilm culture was not incubated under the appropriate conditions. D. the microenvironments within a biofilm promote structural variation.
Which of the following is a hominin?
a. chimpanzee b. Australopithecus c. baboon d. chimpanzee and Australopithecus e. chimpanzee, Australopithecus, and baboon
The gradient distributions of alleles across continents reflect _____
a. the delineation of new races b. genetic drift c. human migration patterns d. protective alleles e. natural selection