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>.
Rating Newest Oldest. Best Answer: A gene mutation is a permanent change in the DNA sequence that makes up a gene. Mutations range in size from a single DNA building block (DNA base) to a large segment of a chromosome.A chromosomal mutation is a mutation involving a long segment of DNA, it is a any change in the structure or arrangement of the chromosomes.he mutation is called the C677T.People with two copies of the T mutation are two and a half times as likely to have a NTD as people with two copies of the normal gene.