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. Conditional knockout mouse activated by a drug
B. Tissue-specific gene knockout
C. Knockout mouse
D. Mutant derived by traditional forward genetics screen
E. Knockin mouse
Answer: C
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Refer to the accompanying figure. Which protist group’s life cycle is demonstrated in this figure?
a. red algae
b. green algae
c. brown algae
d. dinoflagellates
e. foraminiferans
Before a sperm can participate in fertilization, it must undergo ____ in the female reproductive tract
a. the acrosome reaction b. the cortical reaction c. spermatogenesis d. determination e. capacitation
A few days of fever with vomiting followed by high fever, jaundice, and "black vomit" are characteristic of
A) malaria. B) dengue fever. C) Chagas' disease. D) yellow fever. E) schistosomiasis.
Which control method would not be a suitable choice for killing Mycobacterium in a capped culture tube?
A. Ultraviolet (germicidal) light B. 160°C for 2 hours C. 121°C at 15 psi for 15 minutes D. Gamma rays E. All of the choices are correct.