By the year 2010, 17.8 million youths aged 16-19 will work, up from 16 million in 2000, according to government forecasts. Young workers suffer a disproportionate share of injuries and fatalities, especially in the first year on the job. In 2006, 30 youths under 18 died from work-related injuries.
A mutation may or may not affect the amino acid sequence. A mutation may or may not affect the phenotype. Some specific mutations in a gene may have more adverse affects than other mutations in the same gene. A mutation is not necessarily bad. It may even be good. A mutation may enhance or positively change the function of the protein produced by the gene.
Point Mutations. A point mutation is usually the least harmful of the types of DNA mutations. It is the change of a single nitrogen base in a DNA sequence. Depending on the placement of that nitrogen base in the codon, it can cause no affect to the protein.nsertions. One type of frame shift mutation is called an insertion. Just as the name implies, an insertion occurs when a single nitrogen base is accidentally added in the middle of the sequence. This throws off the reading frame of the DNA and the wrong amino acid is translated.