What types of structures can show epigenetic inheritance?
What will be an ideal response?
Ans: Three major types of structures may be inherited epigenetically. First, there may be chemical modifications to a base itself, such as methylation. Second, there may be a protein or protein complex attached to the DNA. Third, a protein or protein complex may control the conformation of new subunits as they are synthesized.
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Porous geological structures below the plant root zone where water flows are known as glaciated subterranean lakes.
Answer the following statement true (T) or false (F)
The enzyme that attaches DNA nucleotides at the ends of eukaryotic chromosomes in order to prevent chromosome shortening is called
A. Polymerase. B. Ligase. C. Telomerase. D. Topoisomerase. E. Primase.
Typically, acetylation of histone tails leads to __________
A) removal of the protein components of the chromatin from the DNA B) relaxed packaging of the chromatin and increased transcription C) tighter packaging of the chromatin and reduced transcription D) increased amounts of euchromatin relative to heterochromatin E) activation of topoisomerase
HIV is a virus that is particularly difficult to eradicate
A) because of the size of its DNA genome. B) because it rarely mutates. C) because after it mutates it can be resistant to drugs. D) due to its small size.