London, England is at (Greenwich Mean Time) GMT. Perth, Australia is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Perth is 8 hours ahead oâ¦f London. During the Northern Hemisphere summer, London, England is at (British Summer Time) BST. Perth Australia is (British Summer Time) BST +7 hours. Perth is 7 hours ahead of London during the Northern Hemisphere summer.
Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. A change in the nucleotide sequence of DNA is called a mutation. A change in the nucleotide sequence of DNA is called a <b>mutation</b>.
What is a mutation? A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time. 2  Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation. 3  Often cells can recognise any potentially mutation-causing damage and repair it before it becomes a fixed mutation.