What is the correct order of general transcription factor assembly at an RNA polymerase II promoter?
A. TFIIB, TFIID, TFIIF, TFIIH
B. TFIIB, TFIIH, TFIID, TFIIF
C. TFIID, TFIIB, TFIIF, TFIIH
D. TFIID, TFIIF, TFIIH, TFIIB
E. TFIIF, TFIIB, TFIID, TFIIH
C
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If a stimulus that leads to a behavior (for example, the presentation of meat powder causing dogs to salivate) is paired with a stimulus that is neutral and does not evoke a particular behavior (for example, the sound of a bell),
and the animal is repeatedly exposed to the two paired stimuli, the animal's behavior (dog salivation) will be evoked by the bell alone. This is called ____ conditioning. Fill in the blank with the appropriate word.
Cells with two of each kind of chromosome are
described by the term a. polyploid. b. diploid. c. triploid. d. haploid. e. tetraploid.
Hybridization of closely related plant species by
doubling the chromosome number always results in a. allopolyploids. b. autopolyploids. c. infertile hybrids that must reproduce asexually. d. inviable hybrids. e. hybrids that are similar to only one of their two parents.
Bacteria have a region of the cytoplasm known as the ________, which is not bounded by a membrane but contains the chromosome.
Fill in the blank(s) with the appropriate word(s).