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Q. 1. In the United States, traffic drives on the right side of the road. In Britain, traffic drives on the left side of the road. In most countries that were British colonies, traffic drives on the left side of the road. Describe a "frozen accident", and address whether the choice of which side of the road to drive on is a frozen accident.
2. If we lived in a world where everybody had always driven on the left side of the road, what sort of experiment would you do to decide whether this was a frozen accident or the result of selection? Hint: driving is supposed to get you from place to place rapidly and safely.
3. Earlier in 2010, the Pacific island nation of Samoa decided to switch from driving on the right to driving on the left. Why may these cause difficulties? Why is it complicated for a cell to change codon usage, say, switching a "stop" codon to a tryptophan codon?
Explain a species using criteria that are used to determine if two populations are the same species along with a discussion of the procedure of speciation with instance.
Assume that the rate of sea-floor spreading was constant during the 1-million-year period depicted above, what have to be the approximate age of marine fossils found in undisturbed sedimentary rock instantly overlying the igneous rock at the arrow la..
Write down a detailed lab report on Separation and detection of proteins. Your report must include Title, Introduction, Materials and methods and three references for this report.
Case Study: A female patient in ER with suspected toxic shock syndrome
He says that the mere presence of DNA is not sufficient to prove the point: his cells may have adopted DNA as a useful molecule quite independently of all other known life forms. What would you do to convince him that he was wrong.
Compare and contrast prokaryotic and eukaryotic cells. If shape and colour of radishes are both due to genes with partly dominant alleles, crossing two dihybrid heterozygotes will produce how many different phenotypes.
About 5 percent of individuals with Down syndrome have a chromosomal translocation in which a third copy of chromosome 21 is attached to chromosome 14. If this translocation occurred in a parent's gonad, how can it lead to Down syndrome in a child.
What would happen if one were to inject both the R strain and heat-killed S strains into a host organism such as the mouse.
Examine the nature of water and how its unique chemical properties impact water regulations in plants. Elucidate the structure and function of the leaf to water regulation.
Describe how body combats an invading bactrum. Address both specific and nonspecific immunity and the cells that are involved in each process. Once that is done cross the alveolar membrane and trace your route out of the body through the nose.
What organism is most probable the cause of the symptoms. What is cause the man's disease? How is this disease transmitted? How may it be prevented.
Some proponents argue that the "damage" hypothesis makes more sense from an evolutionary perspective, claiming that it is more advantageous for an organism's defence system to respond to tissue damage than to the mere presence of a foreign microbe. D..
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