Why do plasmids make such excellent cloning vectors?
a. They are small and circular.
b. They each have hundreds of restriction endonuclease cut sites.
c. They replicate independently of the chromosomal DNA.
d. They have uracil instead of thymine.
c. They replicate independently of the chromosomal DNA.
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Taxol, a secondary metabolite from the bark of the Pacific yew tree, is used as a treatment for
A. diabetes. B. breast cancer. C. indigestion. D. headaches. E. high blood pressure.
Alternative forms of a gene are called ________
Fill in the blank(s) with correct word
Refer to the accompanying figure. What is the function of the structure labeled as 3?
a. replication b. locomotion c. mate recognition d. attachment to a host cell e. to take over host cell mechanisms
The sharing of two pairs of electrons between two atoms is called a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).