BIOL 1090 Lecture Notes - Lecture 10: Cinnabar, Uracil, Pentose
16 Dec 2017
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February 8, 2017 l10: from genotype to phenotype and transcription. Phenotypes are in uenced by both genetic and environmental factors. The environment can be both physical (external) and biological (internal: conditional alleles/mutations. 400 000 000 people have g6pd deficiency: life-threatening haemolytic anemia, affected red blood cells particularly sensitive to oxidants, but only under unusual conditions ex. In epistasis, an allele of one gene overrides the effect of other genes on the phenotype. The transfer of info from dna to protein is a 2 step process in all organisms. Genes encode one of ve known types of rna. Rna uses the pyrimidine uracil instead of thymine. The rna pentose sugar is ribose, not a deoxyribose. General features of rna synthesis from a dna template. Dna double helix is locally unwound during transcription. There are at least 5 kinds of rna, each w/a diff function. Rna uses s ribose sugar, dna uses a deoxyribose sugar.
