A knock-out mouse is made with respect to the PFKL gene, and this mouse is now described as which of the following?
A) a loss-of-function PFKL mouse B) a retention-of-function PFKL mouse
C) a gain-of-function PFKL mouse D) an enhancement-of-function PFKL mouse
Answer: A
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You are a landscape architect working on the grounds of a large estate. After you plant a dozen trees, the owner says, "There's been a mistake. The flowers on some of these willow trees look totally different! I specifically asked for Salix alba. You must have planted two different species." You refer to your tree guide, and read: "Salix alba - species of willow native to Europe and Asia, noted for the white undersides of leaves. Insect pollinated, dioecious. Grows 10-30m tall." How do you respond to the client?
A. "Sorry about that sir, I will dig up the wrong trees right away." B. "Don't worry, the trees with the smaller flowers just haven't undergone phase change yet." C. "Don't worry, when the shorter trees reach full size, they will grow the other kind of flower." D. "Don't worry, Salix alba is dioecious, meaning each tree has either male or female flowers. That is why they look different." 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 dioecious species? 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?
If heterochromatic spreading encompasses the new location of the w+ gene, what phenotype will the cells have?
What will be an ideal response?
Which body region is protected by fatty acids, acidic pH, lactic acid, and a tough cell barrier with its own normal flora?
A. skin B. eyes C. respiratory tract D. urinary tract E. digestive tract
Organisms that grow near deep-sea volcanic vents are likely to be ________.
A. psychrotrophic B. psychrophilic C. thermophilic D. mesophilic