<p>They only make up the structure right (tertiary) but not sequenced for their entirety?</p>
<p>heres a question from a test i had last year:</p>
<p>
</p>
<p>the answer is E. but A and D are also ways to do it. (so are the others but they werent on the test today) so i guess maybe that leaves amino acids and radioactive dating?</p>
<p>I’m currently wondering why CB would use such an evil test again… What were they thinking?</p>
<p>What would be the best technique for determining the evolutionary relationships among several closely related species?</p>
<p>A) examining the fossil record</p>
<p>B) comparison of homologous structures</p>
<p>C) comparative embryology</p>
<p>D) comparative anatomy</p>
<p>E) DNA or RNA analysis</p>
<p>So, that eliminates choice (c) sequence of nucleotides. There’s still comparative anatomy =] I don’t think it’s carbon dating though… that sounded off to me at least. It probably is sequence of amino acids. Argh.</p>
<p>Has CB ever administered a test twice in a year before? They got lazy. :/</p>
<p>Hahaha they administered the same SAT test a year later or something like that. I don’t know if they’ve ever done that with Bio M or any subject test. Grrr, they must be crazy. That was the hardest Bio test they’ve ever given probably.</p>
<p>i think it was easy. so far only -2…</p>
<p>“Students compare differences in amino acids in the beta hemoglobin from representative primates, complete a matrix of those differences, and from these data, construct and interpret cladograms as they reflect relationships and timing of divergence.” from this random link I googled: <a href=“http://www.indiana.edu/~ensiweb/lessons/mol.prim.html[/url]”>http://www.indiana.edu/~ensiweb/lessons/mol.prim.html</a></p>
<p>I think I put carbon dating as my answer because it doesn’t allow you to compare 2 organisms like the fossil record and the other methods do. Although you could make the argument that you can carbon date 2 things and compare…</p>
<p>i put seq. of amino acids.</p>
<p>That’s interesting. So it might not be sequence of amino acids. I still think it’s comparative anatomy XD</p>
<p>Everyone got different answers…comparative anatomy, sequence of amino acids, and carbon dating.</p>
<p>what was the answer to the question about axons? was it the brain sending signals?</p>
<p>well, with carbon dating you could still compare the age of one thing with the age of another thing.</p>
<p>its a tough call.</p>
<p>axon question I put cell body sends a transmitter? doubtful if it’s right tho.</p>
<p>It was a sensory neuron, so it should fire only when it senses something from the receptor. THAT I do know. On the other hand, I don’t think we’ll ever resolve that sequence of amino acids question. Hahaha… I’ll just assume I’m wrong.</p>
<p>i put something with a receptor.</p>
<p>darn…I thought the receptor WAS the sensory neuron…</p>
<p>for the chordate one… the answer is exoskeleton i think</p>
<p>and the grasshopper leg one? are the legs found in the middle section?</p>
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</p>
<p>i dont think that was a choice. are you sure that it was?</p>