Diseases that mimic ALS. I am 35 yr Female, since December of 2010 I have had twitching in my legs,arms, feet and hands. Recently I have lost muscle in my hand (pinky joint with mild cramping) and forearm, right buttocks (large indent) and both thighs.
Jump to: navigation, search ... Deletion. Deletion is a type of mutation involving the loss of genetic material. It can be small, involving a single missing DNA base pair, or large, involving a piece of a chromosome.Narration Transcription ... s are the result of a loss of a section of the genetic material (chromosome) of the cell. If the deleted segment is small or it does not contain critical genes, the effect on the cell may be small. ~. (1) A deficiency in a chromosome resulting from the loss of a fragment through breakage.
Insertions and deletions are two other types of mutations that can affect cells at the gene level. An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication.nsertions and deletions are two other types of mutations that can affect cells at the gene level. An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication.