Ais a change in the dna sequence. mutation displacement

Mutation

Explanation:

A mutation is a sudden change that occurs at random in the DNA base sequence and can be transmitted to offspring.

In the DNA molecule we find the genes with the characteristics of the organism. All information is encoded by a sequence of nitrogenous bases in the gene itself, and it is from this base sequence that a specific protein is constructed. If, for some reason, there is a change in the sequence of nitrogenous bases of DNA, there will also be change in the amino acid sequence that forms the protein, and consequently in the properties of the protein. In fact, the alteration that occurred in the base sequence of DNA was a mutation, and it may be sufficient to trigger a new feature in the body.

the answer u all are looking for is 4000000000000000000000 million years.