By inserting four developmental genes into ordinary cells such as skin cells, Shinya Yamanaka and James Thomson were able to convert them into:
A) embryonic stem cells. B) induced pluripotent stem cells.
C) nerve cells. D) egg cells.
Answer: B
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Tuberculosis remains a serious worldwide health problem due to all of the following except
A. multi-drug resistance. B. social factors such as crowding and incarceration. C. the prevalence of HIV infections. D. ease of transmission. E. absence of MDR strains.
Receptors for fast pain
A) generally arise from muscles or internal organs. B) give rise to a phenomenon called referred pain. C) transmit action potentials to the brain along the same neurons used by spinal neurons. D) generally occur in or near skin. E) initiate action potentials that travel more quickly.
In double fertilization, one sperm fuses with the egg, and the other sperm fuses with the two antipodal
nuclei. ____________________ Indicate whether the statement is true or false.
Scientists study animal models in order to reveal the functions of human genes. This is an example of:
a. comparative genomics. b. DNA cloning. c. Western blotting. d. RNAi e. gene targeting.