BIOL 1090 Lecture Notes - Lecture 7: Deoxyribonucleoside, Microrna, Corepressor
3 Nov 2016
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Chromatin are chromosomes forming a diffuse network of chromosome threads. Euchromatin are the light regions on a chromosome. They are less condense, gene expressing, gene rich (high gc). Heterochromatin are the dark regions on the chromosome. They are more condensed, silenced genes (methylated), gene poor (high at). Here is an image explaining why the euchromatin are light, while heterochromatin are dark. Between these divisions they form diffuse network bres called chromatin. Answer: disjunction is responsible for the segregation and independent assortment. Answer: an abnormal number of chromosomes in gametes and zygotes. Pseudoautosomal: refers to the genes both on the x and y chromosome. X chromosomes condensed into a darkly staining structure. Transcription occurs in the nucleus and rna transcripts are transported to the cytoplasm for translation. Transcription and translation occur at the same time. Five types of rna (mmrst) many rnas do. 1. messenger rna"s (mrna) that carry genetic information from dna to ribosomes.
