1 A solid. 2  There is one unusual exception. 3  Native mercury is a mineral and is the only metal that is a liquid at normal temperatures. 4  Has a regular crystal structure. A solid. 2  There is one unusual exception. 3  Native mercury is a mineral and is the only metal that is a liquid at normal temperatures. 4  Has a regular crystal structure.
A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation caused by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three.
Frameshift mutations change all of the codons following the location of the DNA change, in this case an insertion. A codon is a 3-base sequence that codes for one amino acid. Amino acids are the building blocks of proteins, and changes in the sequence of amino acids can result in proteins that don't work properly.