The Number of DNA Molecules in a Duplicated Chromosome Is

Question

The number of DNA molecules in a duplicated chromosome is _________________.  
A) one
B) undetermined
C) half that of an unduplicated chromosome
D) two
E) four

Accepted Answer

During DNA replication, a duplicated chromosome consists of two identical copies of the original chromosome, each containing a DNA molecule. Therefore, the number of DNA molecules in a duplicated chromosome is two.