homework 7

homework 7 - BICD 100 Spring 2008 Page 1 of 3 S. Brody,...

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

View Full Document Right Arrow Icon
Page 1 of 3 S. Brody, ext. 42619 Spring 2008 4125 Muir Biology HOMEWORK SET #7 — KEY 30 pts total 1. ( 15 pts total ) The time of entry results indicate the following order: pur + ~16' ~18' ~22' pro + lac + marker locus time of entry origin The second plating, on medium containing proline, lactose and streptomycin, selects for pur + ; thus, the partial diploid may be represented as: pur + pro + lac + ! " # $ pro lac pur Since the selection for pur + requires the stable integration of the pur + locus, the exchange labeled above is required. Exchange or or will then complete the integration of pur + . The genotypes of the colonies on plates A and B and their origins are as follows: Plate A Colony Type Genotype # Origin (Exchanges) a) ( 5 pts ) i.e., unable to grow on B Not seen on plate B Not seen on plate B pur + lac + pro pur + lac pro 9 10 , , Plate B ( 5 pts ) pur + lac + pro + pur + lac pro + 29 1 , , ,
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.

This note was uploaded on 06/07/2008 for the course BICD 100 taught by Professor Nehring during the Spring '08 term at UCSD.

Page1 / 3

homework 7 - BICD 100 Spring 2008 Page 1 of 3 S. Brody,...

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