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Phosphorous is required to synthesize the deoxyribonucleoside thriphosphates used in DNA replication. A geneticist grows some E. coli in a medium containing nonradioactive phosphorous for many generations. A sample of the bacteria is then transferred to a medium that contains a radioactive isotope of phosphorous (32P). Samples of the bacteria are removed immediately after the transfer and after one and two rounds of replication. Assume that newly synthesized DNA contains 32P and the original DNA contains nonradioactive phosphorous. What will be the distribution of radioactivity in the DNA of the bacteria in each sample? Will radioactivity be detected in neither, one, or both strands of DNA?
the reversion precisely reversed the original change that produced the typ- mutant allele.
How to comprise the genotypes of both parents. The pronghorn of the United States and the saiga antelope of the central Asian steppes live in similar habitats and have alike adaptations. Which of the features would you be surprised to discover in a s..
As a pea plant grows, its root cells divide by mitosis. If the diploid chromosome number of the plant is fourteen, how various chromosomes will each newly formed root cell have.
Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body.
How do you describe the apparent contradictory finding of spontaneous pain and interference with pain perception in just about the same area.
Why was the discovery of microsphere and coacervates an important contribution to understanding of how life might have originated on earth .
Using this information, what two strategies can you use to isolate the giraffe's gene from its genomic library. If only females are found to be black, what were genotypes of the parents.
Explain why there are no male offspring with the allele combinations
Oops! You were cleaning out the aquariums in the biology lab and you accidentally placed the saltwater fish in the freshwater tank. What will happen to the cells of these fish?why proper hydration important for multicellular organisms.
Which hormone causes an increased output of enzyme-rich pancreatic juice and stimulates gallbladder contraction to free bile. Build up a network design that accommodates these requirements and keeps costs down. These training environments must hold a..
ATP-synthase is a large membrane-integral protein complex that produces ATP from ADP and inorganic phosphate. Describe the location of this complex in the cell; list its major parts and the subunits each part is made of. Describe how it is able to co..
Describing how you would test the hypothesis. Start by examining the living species around you. Ever wonder why the pollinator is attracted to the particular flower.
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