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A frameshift mutation can drastically change the coding capacity (genetic information) of the message. [1] Small insertions or deletions (those less than 20 base pairs) make up 24% of mutations that manifest in currently recognized genetic disease. [10] Frameshift mutations are found to be more common in repeat regions of DNA.
Frameshift mutations will alter all the amino acids encoded by the gene following the mutation. Usually, insertions and the subsequent frameshift mutation will cause the active translation of the gene to encounter a premature stop codon , resulting in an end to translation and the production of a truncated protein.
For example, a common microindel which results in a frameshift causes Bloom syndrome in the Jewish or Japanese population. [3] Indels can be contrasted with a point mutation . An indel inserts or deletes nucleotides from a sequence, while a point mutation is a form of substitution that replaces one of the nucleotides without changing the ...
The mutation must occur at the specific site at which intron splicing occurs: within non-coding sites in a gene, directly next to the location of the exon. The mutation can be an insertion, deletion, frameshift, etc. The splicing process itself is controlled by the given sequences, known as splice-donor and splice-acceptor sequences, which ...
This is a graphical representation of the HIV1 frameshift signal. A −1 frameshift in the slippery sequence region results in translation of the pol instead of the gag protein-coding region, or open reading frame (ORF). Both gag and pol proteins are required for reverse transcriptase, which is essential to HIV1 replication.
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The test can also detect disorders that affect the sex-linked chromosomes such as Turner's Syndrome, Triple X Syndrome, and Klinefelter Syndrome. NIPT can also detect congenital heart disease such as atrioventricular septal defect, and this disease can also be a side effect in the conditions mentioned above.
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