Buscar
Estás en modo de exploración. debe iniciar sesión para usar MEMORY

   Inicia sesión para empezar

level: Mutations

Questions and Answers List

level questions: Mutations

QuestionAnswer
What is a mutation?a change in DNA sequence which can lead to a change in the amino acid sequence
Where do mutations occur?DNA - introns and exons
What causes a mutation1. Occur naturally at random. 2. Can arise from incorrect base pairing in DNA replication. 3. Mutagenic agents increase the frequency of mutations
What are mutagenic agents ?These increase the frequency of mutations: -High energy radiation (x rays/UV light) -High energy particles (alpha and beta particles) -Chemicals (nitrous oxide/benzene/tar in cigarettes).
mutations typesSubstitution mutation – base(s) are replaced by a different base. Addition mutation – base(s) are added. Deletion mutation – base(s) are removed. Translocation – A sequence of bases is removed and relocated to a different place (either on the same chromosome or a different chromosome) Inversion mutation – a sequence of bases is reversed. Duplication mutation – sequence of bases is repeated.
types of mutations pneumonSADTID
What is a frame shift?move along right to the mutation