An order can be subdivided into
A. families.
B. classes.
C. species.
D. subphylums.
A. families.
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A researcher wants to create a mouse model for a disease, to allow her team to study possible therapies. The disease is known to be caused by a small deletion that removes a certain gene. Which type of mouse would be the best choice for this purpose?
A. Knockout mouse B. Knockin mouse C. Conditional knockout mouse activated by a drug D. Mutant derived by traditional forward genetics screen E. Tissue-specific gene knockout 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 transgenic mouse technology? 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?
Six fingers on one hand would be classified as
a. a genetic disorder. b. a disease. c. a syndrome. d. a genetic abnormality. e. an illness
Which of the following gives the correct order of layers the sperm crosses when entering the egg?
A. oocyte plasma membrane, corona radiata, zona pellucida B. corona radiata, oocyte plasma membrane, zona pellucida C. zona pellucida, oocyte plasma membrane, corona radiata D. zona pellucida, corona radiata, oocyte plasma membrane E. corona radiata, zona pellucida, oocyte plasma membrane
Stretch-sensitive muscle spindles are indicated by
a. A. b. B. c. C. d. D. e. none of these.