Four of the Five choices listed below produce alterations in the sequence of DNA nucleotides. Select the exception.
a. helicase
b. point mutations
c. insertion
d. deletion
e. base substitution
Biology Question?
A.
B - a point mutation is a change in a DNA nucleotide, but only one. This change changes the sequence.
C - Insertion means something's been put in between two previously-neighbored DNA nucleotides.
D - Deletion means a nucleotide has been removed.
E - Base substitution is one method by which point mutations occur.
Reply:a. helicase
this enzyme unwinds the DNA strands
Reply:a
land survey
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