28. In a transformation experiment, DNA is collected from an E. coli donor strain of genotype cys(+) leu(-) thr(+) and used to transform a recipient of genotype cys(-) leu(+) thr(-). Initially, the treated recipient population is plated on a minimal medium supplemented with threonine. Many colonies are obtained. What are possible genotypes of these colonies? A. cys(-) leu(+) thr(+) B. cys(+) leu(+) thr(-) C. All are cys(+) and either + or - for leu and thr D. All are thr(+) and either + or - for cys and leu E. All are thr(-) cys(-) and either + or - for cys
28. In a transformation experiment, DNA is collected from an E. coli donor strain of genotype cys(+) leu(-) thr(+) and used to transform a recipient of genotype cys(-) leu(+) thr(-). Initially, the treated recipient population is plated on a minimal medium supplemented with threonine. Many colonies are obtained. What are possible genotypes of these colonies? A. cys(-) leu(+) thr(+) B. cys(+) leu(+) thr(-) C. All are cys(+) and either + or - for leu and thr D. All are thr(+) and either + or - for cys and leu E. All are thr(-) cys(-) and either + or - for cys
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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Transcribed Image Text:28. In a transformation experiment, DNA is collected from an E. coli donor strain of genotype cys(+)
leu(-) thr(+) and used to transform a recipient of genotype cys(-) leu(+) thr(-). Initially, the treated
recipient population is plated on a minimal medium supplemented with threonine. Many colonies are
obtained. What are possible genotypes of these colonies?
A. cys(-) leu(+) thr(+)
B. cys(+) leu(+) thr(-)
C. All are cys(+) and either + or - for leu and thr
D. All are thr(+) and either + or - for cys and leu
E. All are thr(-) cys(-) and either + or -
- for
CYS
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