Homologous structures such as the bones in wings, flippers, and arms would be studied in the field of
A. biogeography.
B. comparative anatomy.
C. comparative biochemistry.
D. the fossil record.
E. comparative embryology.
Answer: B
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Experimental mutations in the timing of Hox gene expression cause lab mice to develop deformed limbs. This is an example of
A. evolution of a new gene to code for the new morphology. B. homeosis. C. heterochrony. D. a change in spatial pattern of gene expression. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about heterochrony? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Four of the five answers listed below possess chloroplasts. Select the exception
a. mesophyll cells b. guard cells c. sclereid cells d. palisade cells e. spongy cells
As urine exits the body, it passes from the urinary bladder and out via the__________.
Fill in the blank(s) with correct word
Vegetarians who rely upon a single type of plant food
A) may become severely dehydrated. B) run the risk of depleting their liver of glycogen. C) are soon unable to produce sufficient quantities of bile. D) may become protein-deficient.