Biology, 13.09.2019 00:30, jeanbeansmith2p2ofty
You are studying mutations in a bacterial gene that codes for an enzyme whose amino acid sequence is known. in the wild-type protein, proline is the fifth amino acid from the amino terminal end. in one of your mutants with nonfunctional enzyme, you find a serine at position number 5. you subject this mutant to further mutagenesis and recover three different strains. strain a has a proline at position number 5 and acts just like wild type. strain b has tryptophan at position number 5 and also acts like wild type. strain c has no detectable enzyme function at any temperature, and you can't recover any protein that resembles the enzyme. you mutagenize strain c and recover a strain (c-1) that has enzyme function. the second mutation in c-1 responsible for the recovery of enzyme function does not map at the enzyme locus. a. what is the nucleotide sequence in both strands of the wild-type gene at this location? b. why does strain b have a wild-type phenotype? why does the original mutant with serine at position 5 lack function? c. what is the nature of the mutation in strain c? d. what is the second mutation that arose in c-1?
Answers: 2
Biology, 21.06.2019 21:50, samuribe17
What is the name for a substance formed in a chemical reaction
Answers: 1
Biology, 22.06.2019 04:00, hannahe83
As studied this week in the cell cycle, we saw how a cell moves through its life with a plan. as you transition from a student at uma to a valued member of your chosen career field, what will you put into place in your life to manage and to fit the new responsibilities of your career into your current life?
Answers: 2
Biology, 22.06.2019 06:00, toxsicity
Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !
Answers: 1
You are studying mutations in a bacterial gene that codes for an enzyme whose amino acid sequence is...
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