BIO 2600 Study Guide - Francis Crick, Rna Splicing, Uracil

• School: Wayne State University
• Department: Biological Sciences
• Course: BIO 2600

Document Summary

Chapter 7: from dna to protein: how cells read the genome. A cell can express different genes at different rates: gene a is transcribed and translated much more efficiently than gene. B, therefore allowing the amount of protein a in the cell to be much higher than that of protein b. Uracil forms a base pair with adenine: despite the absence of a methyl group, uracil has the same base-pairing properties as thymine, thus u-a base pairs closely resemble t-a base pairs. Transcription produces an rna complementary to one strand of. Dna is transcribed by the enzyme rna polymerase. Rna polymerase catalyzes the formation of the phosphodiester binds that link the nucleotides together and form the sugar-phosphate backbone of the rna chain. Rna polymerase moves along the dna unwinding the dna helix in front of it 5" to. Signals in the nucleotide sequence of a gene tell bacterial rna polymerase where to start and stop.