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Question: Suppose that a molecular clock has been operating since the divergence of two species, calculate the divergence rate, given that the amino acid difference is 20% and the estimate time since the two species diverged from a common ancestor is 38 millions years.
Describe why biological information of amino acid sequences in proteins is encoded in codons composed of 3 nucleotides and NOT 2 nucleotides.
Explain how you would build a Windkessel machine, including individual parts and assembly. How would you operate this machine? What cardiovascular physiology principle would machine display and how would you measure this phenomenon.
Should society subject pregnant women to dietary restrictions during pregnancy to protect the fetus from the effect of defective genes they carry.
If a person has a stomach ulcer that is aggravated by excessive hydrochloric acid {HCl} secretion, why on earth would he or she be drinking milk to feel better,
Write down 1X4 matrices, P, G, and M that represent the nutritional values of each food. Then find 3P+2G+2M and tell what the entries represent.
In the periodic table of elements, you should be able to identify elements that are classified as metals and non-metals. Define and distinguish the two different major types of bonding in atoms.
Illustrate the environmental conditions that would favour sexual reproduction over asexual reproduction in Hydra. What is the possible evolutionary reason for having two different reproductive strategies.
Discuss the greatest effect on determining which mutations will go to fixation in both a large population and a small population?
Some sensory neurons in our bodies generate action potentials in response to pressure or movement, allowing us to feel things through our sense of touch.
Barbara McClintock, famous for discovering that genes might move within genomes, had her meticulous work ignored for nearly 4 decades, but eventually won the Nobel Prize. Why was her work so distrusted.
Represent graphically the relation between melting temperature and the G-C content of DNA. Construct relations for dependence of melting temperature of a 30 bp DNA duplex on the G-C content.
A cell population that you are increasing in a culture dish expresses Sox2. Discuss how do you make sure it is a pluripotent cell, not a neural stem cell?
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