Answer:
Genetic code consists of a sequence of nucleotides which are the building blocks of DNA. Each nucleotide contains a four-letter code, which is used to construct proteins in the organism. These proteins are responsible for the physical and behavioral traits of the organism. Changes in the genetic code can occur through mutation, which is when a mistake is made in the nucleotide sequence during DNA replication. This can lead to changes in the proteins and the traits of the organism. Some of these changes can be beneficial, while others can be harmful. Ultimately, the effects of these genetic changes depend on the environment in which the organism lives and the type of change that has occurred.