Which of the following is NOT a trait of all chordates (at some point during their lives)?
a) notochord
b) muscular, post-anal tail
c) dorsal nerve cord
d) series of pharyngeal slits
e) radial symmetry
Ans: e) radial symmetry
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One widely used cladistic method of examining evolutionary relationships is ________, which is based on the assumption that evolution is most likely to have proceeded by the path requiring fewest changes
A) topology B) neighbor joining C) parsimony D) systematics
You are working in a lab studying a gene and notice that there are many other genes that code for similar traits. This is most likely the result of:
A. duplication and divergence. B. reciprocal translocation. C. inversion. D. deletion. E. translocation.
Which one of the following occurs first in the process of hemostasis?
A) blood clotting B) production of fibrin C) formation of a platelet plug D) vascular spasm E) destruction of calcium ions
Give an example of a wind-pollinated plant.
What will be an ideal response?