Answer:
mutations occur on alleles
Step-by-step explanation:
alleles are the main place where genetic mutations occur. they result in many new traits such as eye color. they can also result in the change of dna sequence which may alter the number of chromosomes a person has, giving them a disease or condition. Some mutations like eye color are good as it increases genetic variety. They happen randomly in dna replication and cell division. The dna gene is damaged or changed and alters the genetic messgae of the messanger rna when it is getting ready for cell division, resulting in changes in and around the body.