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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?
Compare and contrast the major arteries and veins of the pulmonary and systemic circulation. I know there are a lot but not sure which are the major ones.
What is diapause.
Compare the elution lane to the positive control lane. How do you know the recombinant protein present in the elution sample? How pure is the elution sample compared to the control?
What are the steps in isolating the DNA from strawberries. What are the materials required to isolate DNA.
Assume that the genetrpA in an auxotrophic strain ofE. coliis located at 27 minutes, whereas the genepyrE is located at 81 minutes.
What are the steps involved in forming the Ig mRNA(s) that will encode a complete immunoglobulin molecule? Include all steps at both the DNA and RNA level and the molecules involved in the process as well as their function.
Which term describes tonicity of the external solution. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is rea..
Compute the observed distance d at the molecular level between the three sequences and the corrected distance by using kimuras 2 parameter k2 method
Create four molecules of water clearly illustrating the correct orientation of the water molecules around the ammonia
What is the significance of the chloroplasts structural feature that the thylakoid membrane is located between the stroma and the thyloakoid space.
what is meant by increasing levels of organization in anatomy & physiology? What are the different levels & how do they relate to each other? What are examples for each level?
Explain why is potassium not equally distributed across the membrane and why is cell negative on the inside?
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