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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?
In this example, for every base designated Q, there is twice that amount of base R; for every base Z, there is twice that amount of base S. If molecule contains 33.33 percent R, what percentage of Z would you expect.
A patient has an 80 percent blockage of his left anterior descending coronary artery. Illustrate what occurs in terms of myocardial oxygen supply and demand if his sympathetic nervous system is stimulated.
What was this experiment and why was it so significant? Diagram and briefly describe the steps of the process. How and why has recombinant DNA technology impacted biotechnology.
Across between short-tailed mouse and a long-tailed mouse yields all short-tailed mice. Crosses among the F1 yield an F2 of 48 short-tailed and 22 long-tailed. Suggest the model to explain and perform a chi-square test of your results.
How many 10 micrometer yeast cells could fit across the field. In a guinea pig, black is dominant to brown, and solid colour is dominant to spotted. A heterozygous black, solid-coloured pig is mated with a brown, spotted pig.
What characteristic of the synthetases explains this discrepancy. Tina is consuming 15 mg of iron per day. Her RDA is 18 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of..
Which of the statements best describes the shape of its teeth? How many teeth does it have in the premaxilla.
History of stem cell legislation and how does it compare to comparable statutes in the rest of the world? Talk about what the current legislative state of affairs is and where the law on stem cells in the United States should go in the future and why..
Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body.
The least amount of carbon dioxide from burning of fossil fuels. Toms father suffers a stroke that leaves him partially paralyzed on his right side. What type of glial cell would you expect to find in increased numbers in the area of the brain that i..
Explain how black and white pattern on the male siamese cat arises. If the oceans warm a few degrees, what impacts can you see on the landmasses, biologic community, and human populations? Are these positive or negative changes? Why with reason.
What combination(s) of chromosomes are possible in haploid cells following both divisions of meiosis? (Hint: remember independent assortment). A diploid cell contains three pairs of homologous chromosomes designated C1 and C2, M1 and M2, and S1 and S..
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