HEREDITY
MUTATIONS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Another random base which is inserted where it shouldnt be, changing the amino acids that the protein codes for. Insertions can also affect more than one base as they have a knock on effect.
|
|
A random base which is changed to a different base, changing the codons, and therefore the amino acids, and the shape and function of the amino acid
|
|
A random mutation occuring a
|
|
All of the above
|
Detailed explanation-1: -An insertion changes the DNA sequence by adding one or more nucleotides to the gene. As a result, the protein made from the gene may not function properly.
Detailed explanation-2: -(in-SER-shun) A type of genetic change that involves the addition of a segment of DNA. It may be as small as a single base but can vary significantly in size.
Detailed explanation-3: -Insertion mutations cause the production of the wrong amino acids, cause early termination of the amino acid chain ( protein), and change highly structured information stored in the DNA to nonsense producing non functional proteins.
Detailed explanation-4: -1). Because an insertion or deletion results in a frame-shift that changes the reading of subsequent codons and, therefore, alters the entire amino acid sequence that follows the mutation, insertions and deletions are usually more harmful than a substitution in which only a single amino acid is altered.