A cross is made between two E. coli strains: Hfr arg+ bio* leu* XF arg bio leu¯. Interrupted mating studies show that arg+ enters the recipient last, and so arg+ recombinants are selected on a medium containing bio and leu only. These recombinants are tested for the presence of bio+ and leu*. The following numbers of individuals are found for each genotype: arg+ bio+ leu+ 320 arg bio+ leu 8 arg+ bio leu+ 0 arg bio leu-48

A cross is made between two E. coli strains: Hfr arg+ bio* leu* XF arg bio leu¯. Interrupted mating studies show that arg+ enters the recipient last, and so arg+ recombinants are selected on a medium containing bio and leu only. These recombinants are tested for the presence of bio+ and leu*. The following numbers of individuals are found for each genotype: arg+ bio+ leu+ 320 arg bio+ leu 8 arg+ bio leu+ 0 arg bio leu-48

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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