quiz 9 key - Name_____________________________ BIOLOGY 325H...

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

View Full Document Right Arrow Icon

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

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

Unformatted text preview: Name_____________________________ BIOLOGY 325H QUIZ 9 [5 pts] _____________________________________________________________ 1. [2 pts] In mouse, the Pax6 gene has discrete, physically separate enhancers that are responsible for expression of this gene in the pancreas, the neural tube, the cornea/lens, and the retina. Why is it that each of these enhancers only activates transcription in one organ, and not in other organs? Each enhancer is responding (by activating transcription) to a specific set of transcription factor proteins. The cells in each of these organs contain different profiles of transcription factors, and thus even though these organs all transcribe Pax6 , they activate its transcription via different enhancer sequences. 2. [2 pts] In terms of genotype, what is the difference between a hybrid and a chimera? A hybrid is the offspring produced by mating individuals of two different species or strains. Each of A hybrid is the offspring produced by mating individuals of two different species or strains....
View Full Document

This note was uploaded on 05/14/2008 for the course BIO 325H taught by Professor Staff during the Spring '08 term at University of Texas at Austin.

Page1 / 2

quiz 9 key - Name_____________________________ BIOLOGY 325H...

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