Question

what is the outcome of dna replication?
a. two identical double - stranded dna molecules
b. a single, quadruple - stranded dna molecule
c. two single - stranded dna molecules
d. two completely different dna molecules

Explanation:

DNA replication is a semi - conservative process. The double - stranded DNA unwinds, and each strand serves as a template for the synthesis of a new complementary strand. At the end of replication, two double - stranded DNA molecules are formed. Each of these new DNA molecules has one original strand (from the parent DNA) and one newly synthesized strand. So, the outcome is two identical double - stranded DNA molecules.

• Option b is incorrect because DNA replication does not result in a quadruple - stranded DNA molecule.
• Option c is wrong as DNA replication produces double - stranded DNA (not single - stranded) as the end product.
• Option d is incorrect since the process of DNA replication ensures that the two new DNA molecules are identical (barring any mutations) to the parent DNA molecule.

Answer:

a. Two identical double - stranded DNA molecules