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The one gene-one polypeptide theory states that for every gene one protein is synthesized n a cell. This theory has lost favor with the discoveries of post-translational modification, protein splicing and epigenetics, all of which support the production of multiple protein products from a single gene.
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What does the one gene-one polypeptide state?
What does the "one gene-one polypeptide" theory state?
Why was the one gene one protein hypothesis altered to one gene one polypeptide hypothesis?
Because one gene codes for one polypeptide and some proteins are made of more than one polypeptide and stuck together after translation of the genes that code for these polypeptides. Not sure if there ever was a one gene one protein hypothesis or if its just something they teach in schools to avoid overcomplicating things.
Why has beadle and tatoms one gene - one enzyme hypothesis been midified since the presented it in 1940s?
Tatum and Beadle proposed the "one gene one enzyme" theory. One gene code is responsible for the production of a single protein. "One gene one enzyme" is modified to "one gene one polypeptide" because the majority of proteins are composed of multiple polypeptides.
One gene controls the synthesis of one?
enzyme enzyme is right but it has been modified to polypeptide
What permits a single gene to code for more than one polypeptide?
Alternative splicing permits a single gene to code for more than one polypeptide. In alternative splicing, certain exons of a gene may be included or excluded from the messenger RNA used to code for proteins.
What does the one gene-one polypeptide state?
What does the "one gene-one polypeptide" theory state?
Relationship between one gene and one polypeptide?
One gene codes for (or provides the recipe) for the creation of one polypeptide through transcription and translation.
What is the job of a gene?
A gene codes for one type of polypeptide (protein).
Why was the one gene one protein hypothesis altered to one gene one polypeptide hypothesis?
Because one gene codes for one polypeptide and some proteins are made of more than one polypeptide and stuck together after translation of the genes that code for these polypeptides. Not sure if there ever was a one gene one protein hypothesis or if its just something they teach in schools to avoid overcomplicating things.
Why has beadle and tatoms one gene - one enzyme hypothesis been midified since the presented it in 1940s?
Tatum and Beadle proposed the "one gene one enzyme" theory. One gene code is responsible for the production of a single protein. "One gene one enzyme" is modified to "one gene one polypeptide" because the majority of proteins are composed of multiple polypeptides.
One gene controls the synthesis of one?
enzyme enzyme is right but it has been modified to polypeptide
What permits a single gene to code for more than one polypeptide?
Alternative splicing permits a single gene to code for more than one polypeptide. In alternative splicing, certain exons of a gene may be included or excluded from the messenger RNA used to code for proteins.
What is the theory the synthesis of each enzyme is catalyzed by one specific gene?
One gene one enzyme theory
What is the one gene-one polypeptide hypothesis?
The one gene-one polypeptide hypothesis is an idea in an attempt to fix the one gene-one protein hypothesis (previously one gene-one enzyme hypothesis) after scientists realized that proteins can be made up by more than one polypeptide chain and that each polypeptide chain is specified by its own gene. An example would be a protein like hemoglobin, the oxygen transporting protein of vertebrate blood cells. Hemoglobin is made up of two kinds of polypeptides. Because of the two polypeptide chains, hemoglobin is made up of two genes. While this hypothesis was an improvement, it wasn't entirely true. While the example is true, the fact of the matter is, eukaryotes are much more complex than 1940s (around the time that Tatum and Beadle first came up with the one gene-one enzyme hypothesis ) technology allowed for scientists to understand. There is a step in RNA processing or post-transcriptional modification where parts of the transcribed gene is cut out (the cut out part is called the intron). Because of this mechanism, it is possible for a single gene to create more than 1 polypeptide.
What is the DNA segment that carries information for building one protein or polypeptide chain called?
mRNA ( it is like DNA only it is one sided and the t is replaced with a u)
The one gene one polypeptide hypothesis is the currently accepted hypothesis explaining how genes help to determine the phenotype of an organism?
True
Which answer best explains why the discovery of alternative splicing forced biologists to change their definition of a gene?
It showed that a gene can direct the production of more than one polypeptide or RNA.
