A mutation is a change in the sequence of an organism's DNA. What causes a mutation? Mutations can be caused by high-energy sources such as radiation or by chemicals in the environment.
A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand (Figure 3). Insertion or deletion of one or ...
Mutations occur continuously and can be spontaneous. Most are caused by errors when the DNA is copied prior to cell division. They can also happen because of: ionising radiation close ionising ...
The greater the dose of radiation a cell gets, the greater the chance of a mutation. Mutations could cause different genes to be switched on or off, and this could create a different or faulty ...
Researchers have been tracking changes to the 'spike' of the virus Researchers in the US and UK have identified hundreds of mutations to the virus which causes the disease Covid-19. But none has ...