Karteikarten
Biology B1.1 D - The effects of genetic variants
Karten in diesem Stapel (10)
- 1What is a mutation?A change in the sequence of bases in DNA.
- 2What can cause mutations?Some substances (including substances in cigarette smoke), by ionising radiation, but mostly by errors when DNA is copied.
- 3What is point mutation?When a nucleotide is substituted for another.
- 4Why may point mutation not cause any effect?Because several different triplets can code for the same amino acid.
- 5What is insertion mutation?When an extra amino acid is added, changing the way the bases are divided into triplets.
- 6What is election mutation?When an amino acid is removed, changing the way the bases are divided into triplets.
- 7What happens when there is copying error when gametes are made?If the gamete is fertilised, every cell of the developing organism will have the variant.
- 8What are some effects of a mutation in offspring?They could be harmful, either causing diseases, or causing the embryo to die. Or they could help the organism to survive better.
- 9What happens if mutation happens in non-coding DNA?Gene expression could be affected.
- 10What is an example of a beneficial mutation?Opposable thumbs.
Informationen
- Beschreibung
- GCSE Biology (B1 - You & your genes) Karteikarten am Biology B1.1 D - The effects of genetic variants, erstellt von lily bevan am 02/12/2017.
- Erstellt von
- lily bevan
- Aufrufe
- 28
- Bewertung