HSS 3505 Lecture Notes - Lecture 2: Epigenetics, Fluorescent Tag, Noncoding Dna
8 Dec 2016
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Document Summary
Cell: semi-permeable, organelles, nucleus genetic material, dna and rna, homeostasis (ph, volume, osmolarity), cell-environment communication, cell function-tissue. So it is inherited if it can be transmittable to different generations, it is likely to have a genetic basis called a genotype: genetic basis for a heredity phenotype. Gene: genetic information is stored mrna: gene readout message trna: bifunctional adaptor molecule that matches mrna with amino acid rrna: part of enzymatic complex which directs polypeptide assembly. Chromosomes: dna arranged in chromosomes, there are coding and non coding. Centromeres/telomeres: non-coding dna (sequences do not code for particular phenotype, the long stretches in the middle of the chromosome are the centromeres. Telomeres keep the ends of the various chromosomes in the cell from accidentally becoming attacked to each other. Chromosome nomenclature there are two arms that extend from the centromere and the shorter one is called the parm. When stained by trypsin-giemsa it reveals alternating light and dark bands called g bands.
