Here's why:
* Mutations are changes in the DNA sequence. These changes can range from single nucleotide substitutions to large deletions or insertions.
* Body cells (somatic cells) are the cells that make up the body tissues and organs. Errors in these cells can lead to mutations that affect the function of the specific cell or tissue.
* Mutations in somatic cells are not inherited. They only affect the individual in which they occur.
Examples of how mutations in body cells can affect an organism:
* Cancer: Mutations in genes that control cell growth and division can lead to uncontrolled cell growth, forming tumors.
* Genetic disorders: Some genetic disorders, like cystic fibrosis, are caused by mutations in specific genes. However, these mutations usually occur in germ cells (sperm or egg), and are therefore inherited.
* Altered protein function: A mutation in a gene can alter the amino acid sequence of the protein it encodes, potentially changing its function or stability.
It's important to note:
* Not all mutations are harmful. Some mutations can be neutral or even beneficial.
* The effects of a mutation depend on several factors, including the specific gene affected, the type of mutation, and the individual's overall genetic makeup.
