genetic mutation
A point mutation has occurred in this case, specifically a transition mutation where one purine (adenine or guanine) is replaced by another purine, or one pyrimidine (thymine or cytosine) is replaced by another pyrimidine. In this example, the cytosine (C) in the original strand has been replaced by a guanine (G) in the complementary strand.
A frameshift mutation
The DNA sequence of gene that change AACTTG to AACATG are called missense mutation. This is known as a process.
The sequence TGA-GCC-ATG-A is changed in 2 places to become TGA-GCA-CAT-GA.When one base is changed, it is called a point mutation.In this case, a GCC in the DNA has been changed to a GCA. This would mean the mRNA codon (coded for by this DNA) would change from CGG to CGU.Both of these codons code for the same amino acid - Arginine. Therefore this type of point mutation is known as a silent mutation.The extra C that appears would be called an addition mutation, which is a type of frameshift mutation.
The DNA sequence of a gene can be altered in a number of ways. Gene mutations have varying effects on health, depending on where they occur and whether they alter the function of essential proteins.The types of mutations include: missense mutation, nonsense mutation, insertion, deletion, duplication, frameshift mutation or repeat expansion.A deletion changes the number of DNA bases by removing a piece of DNA. Small deletions may remove one or a few base pairs within a gene, while larger deletions can remove an entire gene or several neighboring genes. The deleted DNA may alter the function of the resulting protein(s).
insertion
insertion
inversion
A point mutation has occurred in this case, specifically a transition mutation where one purine (adenine or guanine) is replaced by another purine, or one pyrimidine (thymine or cytosine) is replaced by another pyrimidine. In this example, the cytosine (C) in the original strand has been replaced by a guanine (G) in the complementary strand.
a point mutation
A mutation
The comparison between the DNA sequence of normal DNA to the mutated DNA will be made. The type of mutation will be revealed during the base sequence.
This would be a point mutation, which may be harmless, or could be lethal, depending on the protein in which it occurred.
If a point mutation occurred during DNA replication, you would see a change in one base pair of the DNA sequence. This can result in different amino acids being coded for, potentially leading to altered protein structure and function. The effects of the mutation depend on its location within the gene and the specific amino acid change that occurs.
Retardation / Mutation (Down Syndrome)
If the RNA strand is used to make a DNA strand, the process that has occurred is called reverse transcription. This process is carried out by the enzyme reverse transcriptase, which synthesizes complementary DNA (cDNA) from the RNA template. Reverse transcription is commonly associated with retroviruses, where the viral RNA is converted into DNA for integration into the host genome.
A frameshift mutation