Mutation is a change in base sequence and is caused by two things:
1) Radiation
-Ionising radiation (gamma/X-rays)
-Sunshine (UV-B), which causes skin cancer
2)Chemicals - Mutagens
chemicals which cause mutation are called Mutagens
chemicals which cause mutation and cancer are called Carcinogens
eg: Tar in tobacco (also causes cancer)
No comments:
Post a Comment