The low success rate and age-related diseases associated with reproductive cloning is thought to be due to
A. genetic imprinting.
B. the age of the donor cell.
C. cell cycle problems.
D. large offspring syndrome (LOS).
A. genetic imprinting.
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Which of the following statements about interferons is false?
A) Interferons are virus-specific. B) Interferons have been used to treat hepatitis C and certain types of cancer. C) Interferons produced by a virus-infected cell will not save that cell from destruction. D) Interferons produced by virus-infected rabbit cells cannot be used to treat viral diseases in humans.
The mammalian jaw is an example of what kind of moveable joint?
A. gliding joint B. ball-and-socket joint C. hinge joint D. combination joint
Before a desired gene can be spliced into a bacterial plasmid cloning vector, the gene must first be from the original DNA.
A. precisely cut, with a restriction enzyme, B. glued, with ligase, C. injected into a bacterial cell or a virus, having different sequences D. injected into a stem cell, to determine any unwanted traits E. All of the answer choices are correct.
In RNA, the base ____ takes the place of the base thymine
a. deoxyribose b. ribose c. pentose d. guanine e. uracil