DNA SEQUENCING, MUTATION AND REPAIR QUIZ

Aerial mutation

Regional mutation

Site mutation

Point mutation

Phenotype

None of these

Genotype

Both (a) and (b)

not heritable

influenced by the environment

stable

temporary

have no effect on the transcript or protein made

shorten the length of the protein encoded by the gene

cause premature termination of the mRNA

cause a shift in reading frame

Old strands are methylated while new strands are not

New strands do not contain cytosine bases

New strands are lower in molecular size

New strands are methylated while old strands are not

Induced mutations

Spontaneous mutations

Analogous mutations

None of these

modification of mRNA

a premature termination of the synthesis of a polypeptide

a large deletion within the reading frame of a gene

an abnormal elongation of a polypeptide

rapidly sequencing thousands of small randomly cloned fragments

methodical sequencing a few large cloned fragments of DNA

All of these

sequencing the bacterial chromosome while it is still intact

E. coli

H. influenzae

S. thermophilus

S. pneumoniae

conversion of guanine to xanthine

None of these

formation of a thymine-dimer

deamination of cytosine to uracil