Science mutation | Definition, Causes, Types, & Facts | Biology 24/7

A mutation might be a modification that happens in our polymer sequence, either because of mistakes once the polymer springs or because the results of environmental factors like actinic radiation light and cigarette smoke.








  • Over a lifetime our DNA? can undergo changes or ‘mutations?’ in the sequence of bases?, A, C, G and T.
  • This results in changes in the proteins? that are made. This can be a bad or a good thing.
  • Mutations can occur during DNA replication? if errors square measure created and not corrected in time.
  • Mutations can even occur because the results of exposure to environmental factors like smoking, sunlight and radiation.
  • Often cells will recognise any probably mutation-causing harm and repair it before it becomes a tough and fast mutation.
  • Mutationscontribute to genetic variation? within species?.
  • Mutations can even be heritable, particularly if they need a positive effect.
  • For example, the disorder sickle cell anaemia? is caused by a mutation in the gene? that instructs the building of a supermolecule referred to as haemoglobin?. This causes the red blood cells? to become an abnormal, rigid, sickle shape. However, in African populations, having this mutation additionally protects against malaria?.,
  • However mutation can even disrupt traditional sequence activity and cause diseases, like cancer?
  • Cancer is that the most typical human genetic disease; it's caused by mutations occurring during a variety of growth-controlling genes. Sometimes faulty, willcer-causing genes can exist from birth, increasing a person’s likelihood of obtaining cancer.
Dna mutation, point mutation

Dna mutation, point mutation


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