mutations Flashcards
mutations are
heritable changes in base sequences that modify the information content of DNA
synonymous or silent
does not have an effect on the primary structure of the protein/peptide
non-synonymous
change in amino acid sequence, Either radical or conservation
Deleterious
has a negative effect on the fitness of the organism
spontaneous
mistakes during replication
exposed to radiation, ultraviolet light, hydrolysis and oxidation
base analog mutagens
Fuck up all the tyrosines so that only guanine can pair with them. Thus all A replaced with G.
Hydroxilating
Add OH to cytosine so only adenine can pair. Thus A->G
Akylating
G is ethylated, binds with T, next split has A’s instead of G’s
G->A
Deaminating
remove NH2 from adenine
remove NH2 from cytosine changing it to uracil
u binds with a so A->T
c binds with deanimated a so T->C
Intercalatin
I think Indel just swaps whatever it wants
Human mutation rate
2-3 10-8/generation)
200-300 an individual
types of mutations transmitted to progeny
Germinal