gene mutations

Question 1

silent mutations

Answer 1

intron mutation
change in tertiary strucutre, may not have major affect

Question 2

dupliaction

Answer 2

one or more bases repeated, frame shift

Question 3

inversion

Answer 3

a group of bases become sepearated from DNA base sequemce, re-join at the same postion but in reverse order
cange in amino acid sequence, changes in primary and tertiary structure of protein

Question 4

transolaction

Answer 4

group of bases become seperated from DNA base sequence on one chromosome, inserted into DNA sequence on another chromosome
significant effect on phenotype as different genes on different chromosomes

Question 5

most significant mutation

Answer 5

translocation

Question 6

caises of mutation

Answer 6

spontaneous error during DNA replication
chemical mutagens, benzene, alcohol, tobacco
ionising radiation