Which genes are expressed in Drosophila after pattern formation along the A/P axis has been successfully established?
A. homeotic genes
B. gap genes
C. segment polarity genes
D. bicoid genes
E. totipotent genes
Answer: A
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Which of the following is true about the synthesis of macromolecules from monomeric subunits?
A. It saves energy B. It saves biosynthetic raw materials C. It saves genetic storage capacity D. All of the choices are correct.
In competitive inhibition, the ____
a. products block the active site of the enzyme b. products bind to a site other than the active site of the enzyme and block enzyme activity indirectly c. substrate and cofactors compete for the active site d. inhibitor binds to and directly blocks the active site of the enzyme e. inhibitor binds to the enzyme at a site other than its active site
Polymerase Chain Reaction is a technique to produce multiple copies of a sequence of DNA
Indicate whether the statement is true or false.
The major way in which therapeutic cloning and reproductive cloning differ is that
a. reproductive cloning cannot in reality be accomplished, while therapeutic cloning can. b. therapeutic cloning seeks to provide cells and tissues for use in treatment of human diseases. d. reproductive cloning can only be done in plants, therapeutic cloning only in animals. e. reproductive cloning uses adult stem cells, therapeutic cloning uses embryonic stem cells. f. There is no difference: both processes seek to obtain a genetically pure individual.