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Evolutionary biologists have always used a broad range of modern organisms to infer the characteristics that ancestral organisms may have possessed. Genomic sequences are now available for an increasing number of species, and scientists studying evolutionary processes can take advantage of this enormous amount of data to bring evolution into the arena of molecular studies. By aligning the sequences of homologous genes and looking for regions of similarity and where changes have occurred, it is possible to infer the sequence of the ancestral gene.
What term is used to describe the changes in gene sequence that have occurred?
How can we use what we know about this process to construct a timeline showing when various sequence changes occurred and when they lead to the modern sequences that we know today?
Determine what effect did the agricultural revolution have on the growth of the human population?
Using the two-hybrid system to detect interactions between proteins, you obtain the following results: A clone encoding gene A gave positive results with clones B and C.
What would be the effect on ATP production of adding a substance like 2,4-dinitrophenol(alprotonophore) that makes the mitochondrial membrane leaky to protons?
Create a paper about the posibility of virolysn being used to treat Staph infection, but I do not really understand virolysin in its essence.
Explain physiological changes that occur in three different organ systems when food is ingested and how these systems coordinated a response in the human body.
make an experiment to test what happens (i.e. what is the final plasmid DNA content of cells in a transformed colony) if a competent cell is transformed with circular double-stranded plasmid DNA where there is a mis-match (e.g. a G-T base-pair ins..
Based on the general permeability equation, net flux of solute across a cell membrane, Jnet (gm/sec), is proportional to the permeability coefficient, P,
You are required to pick up a bag and move it a few meters. Describe the function of the arm, shoulder and leg muscles used.
The relative electrophoretic mobilities of a thirty kd protein and a 92-kd protein used as standards on an SDS polyacrylamide gel are 0.80 and 0.41, respectively.
Discuss similarities and differences gram-positive and gram-negative cell walls with regard to sensitivity to antimicrobial agents, resistance to phagocytosis.
What are ten - twenty possible variables that may affect seed germination? Make a table for your data, including title, units, and any other useful information.
Sinorhizobium meliloti can be protected from osmotic stress by the presence of certain disaccharides. Dan Orr found that sucrose does a fine job as an osmoprotectant for our strain of S. meliloti,
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