In humans, which of the following traits is affected by a single gene?
A. Skin color
B. Adult height
C. Eye color
D. Red hair
E. Eye shape
Answer: D
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The leading cause of extinction by human activities worldwide is
A) habitat fragmentation. B) predation. C) pollution. D) invasive species. E) overexploitation.
The ampullae of Lorenzini are jelly-filled pores that allow fish to sense electromagnetic currents. What is an important property of the jelly in these organs?
A. It secretes pheromones for conspecifics. B. It is a good electrical conductor. C. It contains gustatory receptors. D. It is an electrical insulator. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about electroreception? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Any light-driven reaction that attaches phosphate to a molecule is called ____________________
Fill in the blank(s) with the appropriate word(s).
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and _____ of the last nucleotide in the polymer
A) the phosphate B) C6 C) the OH D) a nitrogen from the nitrogen-containing base