BIOL 401 Lecture Notes - Lecture 10: Glutamine, Valine, Lysine
2 Mar 2017
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Neuron vs. stomach epithelia), or differences during developmental stages (ex. Multicellular organisms will have the same genomic dna, but differences in gene expression. Gene regulation in eukaryotic cells plays many different roles in the etc. ). Genes can be constitutively expressed (transcribed continuously) or facultative (transcribed as needed ~ ex. lac operon in prokaryotes). cell"s life. For example, regulation can trigger differentiation in cell types (ex. ovary in 5 year old won"t produce same genes as ovaries in (cid:883)8 year old, hormones, )t"s important to note that the coding region new genes always occurs in the 5" 3" direction, though it"s built on the 3" oh for the mammalian genome only consists of about 1-2% of the genes. These genes are widely spread out, so there will be a lot of intergenic sequences. The primary transcript for this synthesis is generated by dna-directed rna polymerase, which uses linear dna as a template to generate the rna complimentary sequence.
