Table of Contents
- 1 How could one change in a DNA nucleotide affect the formation of a protein?
- 2 What happens to a protein if DNA is changed?
- 3 What would happen if one of the nucleotides in DNA got switched with another?
- 4 How could a change in DNA affect the way a protein is made could this affect the expression of the trait?
- 5 What are the possible impacts of changing a nucleotide in a codon on the function of the protein?
How could one change in a DNA nucleotide affect the formation of a protein?
DNA codes for proteins by the sequence of nucleotides in the DNA. Each set of 3 nucleotides codes for a specific amino acid. Also, if a nucleotide is added or lost from a strand of DNA it alters the entire sequence, as the “frame” shifts; the “reading” of the DNA is off, and all the sets of 3 are altered.
What happens to a protein if DNA is changed?
By changing a gene’s instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all. When a variant alters a protein that plays a critical role in the body, it can disrupt normal development or cause a health condition.
What would the codon sequence’s be for?
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. Codons provide the key that allows these two languages to be translated into each other.
What might happen if one nucleotide gets changed in a codon?
A nonsense mutation refers to a base substitution in which the changed nucleotide transforms the codon into a stop codon. Such a change leads to a premature termination of translation, which can badly affect the formation of proteins.
What would happen if one of the nucleotides in DNA got switched with another?
This occurs when one nucleotide base is substituted for another in a DNA sequence. The change can cause the wrong amino acid to be produced. In some cases, the change has little effect. In other cases, the incorrect amino acid can affect the structure or function of the protein being encoded.
How could a change in DNA affect the way a protein is made could this affect the expression of the trait?
Explanation: The DNA sequence of a gene determine the amino acid sequence of the resulting protein. Thus any changes in DNA sequence can result in changes in protein function .
What can cause damage or a change in DNA and how does that change the structure and function of proteins?
Mutations can lead to gene malfunction by changes in sequences that are protein-coding or important for information processing.
How would it benefit a cell to possess a sequence of DNA that could be transcribed and then edited into several different mRNA molecules?
How would it benefit a cell to possess a sequence of DNA that could be transcribed and the edited into several different mRNA molecules? So that the cell can keep the DNA safe in the nucleus while the RNA copies go out and do the work. The sugar in RNA is ribose in stead of deoxyribose.
What are the possible impacts of changing a nucleotide in a codon on the function of the protein?
A change of a single nucleotide in a codon at a crucial functional site in the protein (such as the active site of an enzyme) can result in an amino acid replacement leading to aberrant function.