Question
Biology Question on biological classification
The hereditary material present in the bacterium E.coli is
A
single-stranded DNA
B
double-stranded DNA
C
DNA
D
RNA.
Answer
double-stranded DNA
Explanation
Solution
E. coli is a gram-negative, rod shaped, motile or nonmotile bacteria. E. coli contains a double stranded DNA as its genetic material. The DNA is not associated with any histone proteins so it is referred to as naked DNA. This DNA is circular with no free ends.