How do transcription repressors work?
a. They bind to the same sequence where activators normally bind.
b. They bind to and disable the activator.
c. They recruit histone acetylation enzymes and thus interfere with chromatin remodeling.
d. They bind to RNA polymerase II and prevent it from binding to the transcription factor
complex
e. They methylate DNA.
A
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Our closest extinct relative is ____
a. Homo erectus b. Homo habilis c. Homo neanderthalensis d. Australopithecus afarensis e. Australopithecus africanus
Varieties of Staphylococcus aureus that are resistant to the drug methicillin _____.
A. developed in response to the use of methicillin B. already existed in the population before methicillin was developed C. always have an advantage in every environment D. were strongly selected for as methicillin became widely used to treat bacterial infections E. The second and fourth answers are correct.
If the odds ratio for a particular QTL/DNA marker pair (e.g., Q10M10 ) is 2.2, this indicates that the organism is how many times more likely to get Q10M10 gametes?
What will be an ideal response?
What accounts for rigor mortis?
What will be an ideal response?