Which habitat type in the figure above makes available the most new tissue to consumers?
A) tropical wet forest
B) open ocean
C) algal beds and reefs
D) wetlands
Answer: B
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The reduced-bony-armor allele of the Eda gene is present in only about 1% of marine populations, but is predominant in freshwater populations of stickleback fish. What can we conclude?
_____ Bony armor increases fitness in the marine environment, but reduces fitness in the freshwater environment. _____ Freshwater fish with more bony armor have higher fitness than freshwater fish with less armor. _____ Bony armor is an environmentally-controlled trait, not a genetic trait. _____ The allele arose after the divergence of freshwater sticklebacks. _____ The freshwater environment caused a high rate of mutation in the DNA. 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 stickleback evolution? 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?
Bacteria are notorious for adapting and changing very rapidly. So rapidly, in fact, that they rarely exist in pure culture conditions except in a laboratory. In a single bacterial community there can be dozens of species. Which field of genomics would be most useful for studying conditions such as these?
a. pharmacogenomics b. epigenomics c. metagenomics d. genomic medicine
The white matter differs from gray matter in
that
a. white matter is found in the brain, and gray matter is found in the spinal cord. b. white matter consists of bundles of myelinsheathed axons, and gray matter consists of cell bodies, dendrites, and neuroglial cell. c. white matter transmits sensory information, and gray matter transmits motor information. d. white matter is associated with the sympathetic nervous system, and gray matter is associated with the parasympathetic nervous system. e. all of these are true.
The active form of phytochrome is known as
a. Pp. b. Pr. c. Pfr. d. Pl. e. Pst.