GA levels in plants are correlated with stem length, internode elongation and seed germination. Play role in seed germination, transition to flowering, and pollen development.

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

TLS Online TPP Program

#Id: 8977

#Unit 11. Evolution and Behavior

Molecular clock - The concept of a steady rate of change in DNA sequences over time.