Activation of the IFN-? globin promoter is an example of a histone code. Of the steps given, which is the third in this process?
A. The TATA box in the promoter is exposed.
B. Complexes containing Gcn5 bind to the promoter and acetylate nearby nucleosomes.
C. A chromatin remodeling complex such as SW1/SNF binds to and moves the nucleosome.
D. Initiation of transcription occurs.
E. A protein kinase binds to the Gcn5 complex and phosphorylates nearby nucleosomes.
C
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The causative agent of Lyme disease is
A. Rickettsia rickettsi. B. Rickettsia prowazeki. C. Borrelia burgdorferi. D. Dermacentor andersoni
Which is false about plasmodial slime molds?
a. They are known as “social amoebas.” b. They live in leaf litter and soils of temperate forests. c. They lack a diploid stage in the life cycle. d. They feature a multinucleated mass that arises from repeated mitotic activity without accompanying cytokinesis. e. They feed on decaying organic material and microbes.
In pea plants, the allele for purple flowers (P) is dominant to the allele for white flowers (p). In a cross between a purple-flowered plant and a white-flowered plant, all 73 of the offspring plants had purple flowers
Which cross would provide such results? A) pp × pp B) Pp × Pp C) PP × PP D) PP × pp
Wild type fruit flies have red eyes. A white-eyed female fly is crossed with a red-eyed male fly. All of the females from the cross are red-eyed and all of the males are white-eyed. What type of inheritance pattern is this?
A: Sex-linked B: Autosomal recessive C: Autosomal dominant D: Incomplete dominance E: Independent assortment