Adna segment removed from neurospora
(a pink mold) contained the base sequence
g-t-c-c-a-t-g-c-a. a similar segment of
dna removed from neurospora that had been
exposed to radiation for several hours had the
base sequence g-t-c-c-a-t. this change in the
base sequence is an example of
(1) a deletion (3) a substitution
(2) an insertion (4) a replication