BSCI 222 Chapter Notes - Chapter 11: Genome Size, Chromatin, Centromere
9 Dec 2016
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2 copies of each histone except for the central histone which is h1. Temperature at which half of the dna renatures. It depends on the repetitiveness of base sequence. The further down the y-axis --> the more unique the sequence. The further down the x-axis --> the larger the genome size. Repeated units of a and t that protect the ends of the chromosome. If you have lose ends, and if the chromosome is not stabilized by telomeres it can either be degraded or attach to other dna. The place where spindle fibers attach in the chromosome. Without centromeres, it won"t separate properly and fragments will degrade in cytokinesis mirna (micro rna) Inhibits translation of mrna sirna (small interfering rna) Transcribes all ingredients that are involved in transcription. Includes: pre-mrna snrna - process pre-mrna"s snorna- process rrna. Double stranded dna is heated and the hydrogen bonds that hold the two strands together are weakened and cause nucleotide strands to separate.
