Alteration of histones by addition of methyl and acetyl groups to particular amino acids
A) changes B-DNA to Z-DNA.
B) results in the remodeling of chromatin that can activate or inhibit gene expression.
C) creates G bands seen after Giemsa staining of chromosomes.
D) helps preserve telomeres during DNA replication.
E) alters the denaturation and renaturation of DNA.
Answer: B
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Which of the following best describes the function of the RecA protein in E. coli recombination?
A. Promotes strand invasion and formation of the D loop B. Recognizes double-stranded breaks in the DNA C. Is involved in the initial formation of the Holliday junctions D. Resolves Holliday junctions into separate chromosomes
__________ is a set of methods that allow us to reconstruct phylogeny. Fill in the blank(s) with the appropriate word(s)
Dental caries are caused by the production of ________ by bacteria in the mouth
Fill in the blank(s) with correct word
The septa in hyphae
A. prevent cytoplasm from flowing. B. rarely form a complete barrier. C. are only found in the Zygomycota. D. are commonly found in plants and animals as well as fungi.