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Compare and contrast mutation rate and mutation frequency. Describe the implications for organisms that have long life spans (e.g., humans) and short life spans (e.g., mice). Spontaneous mutation rates in humans are generally higher than in E. coli . Why? What would you expect the mutation frequency to be in each organism?
A swarm of insects blows out to sea in a storm. They arrive at a tiny island and form a new population. After many generations, they have diverged from the source population on the mainland.
Where do histone proteins come from, considering mRNA's are made into proteins outside the nucleus.
Considering geographic distribution, physical environmental conditions, symbiosis, alpha- and beta diversity, and any other factors you consider relevant, describe and explain in some detail the unique conditions associated with hermatypic coral e..
A cross is made in a haploid strain of Neurospora of genotype nic + ad and another haploid strain of nic ad + . From the cross, a total of 1000 linear asci are isolated and characterized as in the following table.
The given statements describe SDS-PAGE, a method used to separate proteins. Some of the statements are correct, and some of them are incorrect.
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.
Selective pressure is often thought to occur within the coding region of a gene but when the sum of Ka/Ks for each position is calculated, no positive selection is shown. Why is this? Can you think of a way to show positive selection in such a gen..
What is the difference between a t-test and a chi-square test? How are the results different.
A cross was performed between two black mice who are known to be heterozygous for that coat color trait. They produce 23 offspring in the first generation. Seventeen black and six white.
Two solutions of sodium acetate are prepared, one having a concentration of 0.1 M and the other having a concentration of 0.01 M. Calculate the pH values when the following concentrations of HCl have been added to each of these solutions: 0.0025M,..
Which virus caused it? Why was the viral culture completed after the Gram and acid-fast stain results were obtained.
express how this hormone leads to an activation of fatty acid oxidation and explain why this adaptation leads to a gradual but pronounced raise in plasma ketone bodies.
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