Chromatin and DNA Sequence Organization Chapter 11 Be able to define chromatin and describe its structure nucleosomes histone proteins plus associated DNA Know the difference between euchromatin and heterochromatin in terms of its structure composition cytosine methylation of DNA histone tail modification and transcriptional activity Know the difference between constitutive and facultative heterochomatin and be able to name two places on chromosomes where constitutive heterochromatin is found Be able to interpret a Cot curve for the renaturation of eukaryotic DNA and know which part of the curve is due to the renaturation of repeated DNA sequences in the genome Be able to state the differences between simple sequence DNAs satellite DNA sequences and interspersed repeats and the percentage of the human genome that is composed each of these classes of repeated DNA sequences Know the size of the human genome and the approximate percentage of the genome that codes for proteins
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