Flashcards in Mutations And Variations (T3) Deck (7):
Define 'mutation' in a plant..
A mutation is a change in the genetic material of the plants
Sometimes mutations in a plant can be beneficial. Why is this, and give an example..
Because is causes 'vibrations'.
Some of the fungi exposed to the Chernobyl nuclear accident developed a form of nuclear resistance.
Why are 'variations' of a species important?
- they can help with the survival of the species
- if the mutation is present in the sex genes it can be passed onto the next generation
What are radiation and chemicals which cause mutations known as?
How could you speed up mutations artificially? Give two examples..
- using ionising radiation such as X-rays, gamma rays and ultra violet rays
- chemicals such as those found in tobacco
What happens to the structure of DNA in a mutation?
There is a change in the sequence of bases in the DNA molecule. This causes either a different protein to be made of it blocks the production of the protein completely.