Two arginine requiring mutants arg-4 and arg-5 were isolated in Neurospora. When the strains were grown...
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Two arginine requiring mutants arg-4 and arg-5 were isolated in Neurospora. When the strains were grown alone on media without arginine they do not grow. When they were crossed to each other, the diploid F1 could not grow in the absence of arginine. Consider the enzymes encoded by arg-4 and arg-5. The table below shows whether mutants grow with the media supplemented with ornithine or citrulline or arginine where citrulline is a precursor to ornithine. Media Supplement. Citrulline Ornithine Arginine Mutant arg-5 arg-4 What is the chronological order in the pathway of arginine synthesis for the enzymes encoded by these genes? Choose the best answer. Select one: O A. arg-4 is before arg-5 O B. the order of arg-4 and arg-5 is random O C. the enzymes act at the same point O D. arg-5 is before arg-4 O E. arg-4 and arg-5 act in different pathways Two arginine requiring mutants arg-4 and arg-5 were isolated in Neurospora. When the strains were grown alone on media without arginine they do not grow. When they were crossed to each other, the diploid F1 could not grow in the absence of arginine. Consider the enzymes encoded by arg-4 and arg-5. The table below shows whether mutants grow with the media supplemented with ornithine or citrulline or arginine where citrulline is a precursor to ornithine. Media Supplement. Citrulline Ornithine Arginine Mutant arg-5 arg-4 What is the chronological order in the pathway of arginine synthesis for the enzymes encoded by these genes? Choose the best answer. Select one: O A. arg-4 is before arg-5 O B. the order of arg-4 and arg-5 is random O C. the enzymes act at the same point O D. arg-5 is before arg-4 O E. arg-4 and arg-5 act in different pathways
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Both the mutant shows no growth in citrulline media whereas both shows growth in the ornithine a... View the full answer
Related Book For
Elementary Statistics
ISBN: 978-0538733502
11th edition
Authors: Robert R. Johnson, Patricia J. Kuby
Posted Date:
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