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.
The first, and least harmful type of point mutation is substitution. Substitutions only affect a single triplet and its corresponding amino acid, leaving the rest of the protein unchanged. There are three outcomes from a substitution mutation:Of the three types of point mutations the most harmful are insertions and deletions. They result in what is known as a frameshift mutation.When a nucleotide base is either inserted or deleted it disrupts the amino acids coded for from the site of the mutation on to the end of the gene.ubstitutions only affect a single triplet and its corresponding amino acid, leaving the rest of the protein unchanged. There are three outcomes from a substitution mutation: Of the three types of point mutations the most harmful are insertions and deletions. They result in what is known as a frameshift mutation.