What is TBP? What is its mode of action?
What will be an ideal response?
Ans: TBP stands for TATA-binding protein. It makes up a portion of the positioning factor that allows an RNA polymerase to bind to its target site. It binds to the TATA box in the minor groove of the DNA double helix and bends it by approximately 80°. This distortion of the DNA in the vicinity of the TATA box allows more efficient binding of transcription factors and RNA polymerase.
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Ecstasy Dr. Goddard is studying the behavioral effects of MDMA (Ecstasy) using a rat model. Dr. Goddard observes a change in rat behavior that he likens to ____.
Coliforms in a water sample indicate ________ contamination
A) fecal B) industrial or chemical C) arthropod D) All of the answers are correct.
You have recently purchased a black angus bull named Maxwell, an advertised "pure-breeding" champion, for which you pay $1,000,000. You mate Max with several cows that are verified pure breeding black angus cows. Several years later, you mate different pairs of Max's offspring (F1 × F1) and find that, with certain pairings, approximately one fourth of the progeny are red (F2). If B = black and b
= red, what were the genotypes of the original cross (Maxwell × cow)? A) BB x BB B) Bb x BB C) Bb x Bb D) BB x bb E) bb x bb
Reproduction in prokaryotes is known as:
a. binary fission. b. meiosis. c. mitosis. d. sexual reproduction. e. spawning.