How can chromatin be altered?
Ans: Modification of nucleosome structure or position
Chromatin remodelling complexes eg SWI/SNF
Change in nucleosome location
Change in tight binding of DNA
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"Mad cow" disease, also called bovine spongiform encephalopathy, is caused by a ________
a. virus b. fungus c. bacteria d. prion
What would be the effects of the accidental seepage of fungicide into the soils surrounding a plant in a mycorrhizal relationship?
a. The plant would die. b. The plant's water and mineral supply would slow down. c. The plant's leaves would become yellow. d. There would be no change in the plant. e. The plant would lose its nitrogen-fixing partner.
Differential reproduction is required for genetic drift
a. true b. false
Maize transposons were originally discovered because their transposition resulted in
a. loss of a chromosomal fragment. b. insertion of a chromosomal segment. c. point mutations in a pigment gene. d. inversion of a chromosomal segment. e. hybrid dysgenesis.