Are Genetic Mutations Good or Bad? BYJU'S NEET (2024)

Genetic mutations:

See Also

Crops Hold Onto Harmful Mutations That Reduce Productivity : USDA ARS

1. Mutation can be defined as an alternation in DNA sequences. It may affect the genotype and phenotype of an individual.
2. Various factors like exposure to radiation, viruses, UV light, or certain chemicals like ethidium bromide can result in mutations.
3. Genetic mutations can be good or bad. Sometimes mutations show a positive effect, whereas, in other cases, they cause genetic disorders.

Beneficial mutation

1. If the change in genetic sequence results in improved fitness, such mutations are considered beneficial.
2. Mutation in the beta-globin gene hemoglobin causes red blood cells to develop a sickle or crescent shape. If one copy of this defective gene is present, it confers the person with resistance to certain forms of malaria.

Example of harmful mutation:

1. If the presence of mutation results in a disease condition in the individual, such mutations are considered harmful.
2. If both the copies of the beta-globin gene are defective, only then the person develops sickle cell disease.

See Also

Plant Sentience and the Impossible Burger - Regeneration InternationalMutant HistoryWhat are the main limitations of the use of mutation breeding for crop improvement?Do Trees Need People? · Idaho Forests Products Commission