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TLS Online TPP Program

#Id: 6455

Eukaryotic nuclei contain RNA polymerase I, RNA polymerase II, and RNA polymerase III can be separated by using DEAE-Sephadex ion-exchange chromatography



#Unit 3. Fundamental Processes #Eukaryotic Transcription #Part B Pointers
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TLS Online TPP Program

#Id: 8971

#Unit 11. Evolution and Behavior

The Death of a Gene

When a gene is duplicated, the new copy is often dead-on arrival (lacks the regulatory elements). 
TLS Online TPP Program

#Id: 8972

#Unit 11. Evolution and Behavior

Gene Structure
The genes that code for many proteins are broken into pieces. These pieces—the exons—are separated by stretches of noncoding DNA—the introns
TLS Online TPP Program

#Id: 8973

#Unit 11. Evolution and Behavior

The current record holder is the gene Dscam in Drosophila. Alternative splicing of its 95 exons could potentially produce more than 38,000 kinds of proteins from this single gene.
TLS Online TPP Program

#Id: 8974

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 8975

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 8976

#Unit 11. Evolution and Behavior

Rate of evolution = Number of amino acid different / Total time
Hint:  Total time = 2xT
Rate of Change per amino acid per year = rate of evolution / total amino acid