What is nucleosome positioning?
What will be an ideal response?
Ans: Nucleosome positioning happens when a particular length of DNA is arranged in a nucleosome in only one configuration, so that certain DNA sequences are present in the linkers and in the exposed face of the nucleosome. Nucleosome positioning is often the result of proteins binding to the DNA to limit the possible nucleosome configurations.
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What produces genetically unique daughter cells?
A. Meiosis B. Mitosis C. Both of these D. Neither of these
Which organisms are not found in the crust of the desert soil? a. Fungi b. Lichens c. All are found in the crust
d. Mosses e. Cyanobacteria
Which of the following is not a virulence factor of Shigella species?
A) the manufacture of several toxins that damage intestinal cells and induce fluid efflux B) the capability to cause stomach ulcers C) the ability to escape from phagocytes D) the capacity to pass between infected cells using an actin propulsion system E) a system that induces host cells to endocytose the bacteria
Describe the movement of water from the soil into the root xylem.
What will be an ideal response?