In class notes for December 5, 2007

In class notes for December 5, 2007 - Introduction to...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Introduction to Biological Sciences 110a In class notes for December 5, 2007 Why would you need to regulate a gene? 1. In response to an altered environment 2. Temporal regulation a. cell cycle b. circadian rhythms c. photoperiodic (season) d. embryogenesis/maturation 3. Spacial regulation (cell-type specific) We will be focusing on bacteria in transcription o The major need in bacteria is #1: the response to altered environment Inducible genes (transcription units) The product of the gene is not made unless in the environment there is the presence of some metabolite or factor which brings aobout te gene’s expression, either directly by allostery or indirectly through a sensing and signal transduction pathway. Induction and repression refer to the effect brought about by an environmental input/signal or effector. Repressible genes The product of the gene is made unless the presence of some metabolite or factor in the environment brings about the inhibition of the expression of the gene, either directly by allostery or
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

In class notes for December 5, 2007 - Introduction to...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online