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Q1. In the last few decades remarkable fossils have been discovered indicating that the ancestor of cetaceans (whales, dolphins, and porpoises) was a four-legged, terrestrial (land) mammal. Utilize darwin's theory of evolution by natural selection to explain how a group of ancient mammals couple be the ancestors of a major new group of mammals, the cetaceans.
Q2. Evaluation of amino acid sequences can shed light on the evolutionary divergence of related species. Would you expect all proteins of a given set of living species to illustrate the same degree of divergence? Why or why not?
He was puzzled, combative, and he refuses to drink any water or any liquid. He lived on Oct. 7th, 1849. While said to the man's name, the student thought "Nevermore!" What was his diagnosis.
Recent evidence shows that the individual chromosomes occupy fairly defined territories within the nucleus. Given the structure and location of parts of the nucleus, which would be more probably involved in chromosome location.
Glucose (C6H12O6) can survive as both an open-chain form and a closed-ring form. Before 1900, glucose was only thought to happen as an open chain. Now we know that over 99 percent of the time, glucose occurs in the closed-ring form. What probable dif..
Drag the labels onto the graph to indicate which presynaptic neuron produced each change in the axon hillock's membrane potential. Assume that the same number of ligand-gated ion channels opens at each synapse.
At another locus, sepia eyes are inherited as an autosomal (non sex linked) recessive. The presence of the white eye phenotype (x superscript w x superscript w in females, x superscript y in males) masks sepia phenotype, so regardless of the sepia ge..
Propose two ways the photosynthesis process be improved. If the sequence TCGTA was used as a template in DNA replication, what will the sequence of bases be on the newly synthesized strand.
If an animal needed to store energy for long-terms use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage.
What is estimated density of firs in the forest. Why then is the gene called Dorsal, and not, for instance, Ventral.
Barry Snowden, owner of Barry's Snowboards, would like to develop a page that would explain a list of snowboard types along with their descriptions.
Which term describes tonicity of the external solution. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is rea..
They isolated bacterium in a pure culture and demonstrated that experimental healthy animals injected with this culture became sick. What other test do researchers require to perform to be absolutely sure that the bacterium is responsible for the dis..
A mammal uses only 1 to 2 percent of its energy in ventilation while a fish must spend about 15 percent of its energy to move water over its gills. Describe this huge difference in their efforts to collect oxygen.
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