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Explain why Meselson & Stahl were able to conclude that DNA replication is semiconservative. Draw pictures to represent the bands that would appear by bacterial DNA in the density-gradient tube before the switch to 14N media and after one & two generations after the switch to 14N media if replication were a) semiconservative; b) conservative; c) dispersive.
Defend the stem cell v/s gene therapy with regard to the current treatment projections for the ALS.Recognize the Mimoun Azzouz and explain his work in gene therapy.
1) What is the general purpose of photosynthesis? 2) describe the anatomy of a chloroplast and where they are found. 3)What are the sources of carbon, oxygen, and hydrogen in the photosynthetic reaction?
You are conducting field work and discover two groups of squirrels living on opposite sides of a lake. How would you plan a study to find out whether these two groups belong to the same species.
Determine the importance of ADP levels within the mitochondrion, particularly with respect to respiratory rate?
What happens if intrapleural pressure becomes equal to atmospheric pressure. McCloskey implies that evolution has displaced the need for a designer.
Under phosphate limiting conditions what will be the activation state (i.e. factors that make the enzyme active during the day) of RubisCO considering feedbacks from the light reactions of photosynthesis?
When true breeding pea plants with yellow seeds are crossed to plants that have green seed, all the offspring produce yellow seed.
Purines and pyrimidines play crucial part in cellular energy systems signaling and in the production of DNA and RNA.
briefly describe the phylogenetic relationship of these three organisms that you might infer.
A DNA polymerase can synthesize the DNA at a rate 300bp/min and can introduce error 2bp/400bp.If this DNA polymerase is used in a PCR reaction to amplify gene of 4000bp,calculate number of errors.
When DNA samples A and B were separated by buoyant density centrifugation the 2 samples migrated 23 and 15 cm, respectively. If DNA B had a GC content of 34%, what was the GC content of DNA A.
Two dominant alleles in mice both affect the appearance of the tail. Shorty (S) produces mice with short tails and hairy produces mice with hairy tails.
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