1. Four genes (A,B,C,D) of a bacterium code for four enzymes (A,B,C,D), which act sequentially tocatalyze the production of compound D, as follows.enzyme Aenzyme Benzyme Cenzyme Dprecursor -----> compound A -----> compound B -----> compound C -----> compound DA number of mutant strains of the bacterium are isolated, which grow only on supplemented media, asoutlined below.Medium supplemented withCompound ACompound BCompound CCompound DStrain 1No growthNo growthGrowthGrowthStrain 2No growthGrowthGrowthGrowthStrain 3No growthNo growthNo growthGrowtha.The mutation in strain 1 is in which gene? How do you know? ✓✓b. The mutation in strain 2 is in which gene? How do you know? ✓✓c. The mutation in strain 3 is in which gene? How do you know? ✓✓

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Answered: 1. Four genes (A,B,C,D) of a bacterium…

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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5. You isolate ten new mutant yeast strains that are defective in synthesis of leucine, an amino acid. These Leu- mutants (numbered 1-10) were all isolated in a strain of mating type a (MAT a). S. cerevisiae yeast are either mating type a or α. As it turns out, your high school classmate, now at the University of Chicago, has independently isolated ten yeast Leu- mutants (numbered 11-20) in a strain of mating type α (MAT α). You and your ex-classmate decide to combine your resources and determine how many different genes are represented by your 20 mutant strains. You cross each of the MAT a strains to each of the MAT α strains. Your experimental observations are shown in the table below, where an empty square indicates that the diploid did not grow on minimal medium and a filled square indicates that the diploid did grow on minimal medium. Based on this experiment, what is the minimum number of genes required for leucine synthesis?
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