Answer:
each new DNA double helix consists of one old strand and one new strand
Explanation:
Replication is a process during which the DNA produces a copy of itself. It is one of the steps involved in gene expression.
During replication, the double helix strands of DNA are separated into individual strands by DNA helicase. Each strand then serve as a template for the synthesis of new complementary copies.
After the synthesis of the complementary copies, the old strands do not wind back together. Instead, they wind with their newly synthesized complementary copies. This results in two DNA double helix with each consisting of one old strand and one new strand.
This is why the replication of DNA is said to be semi-conservative.
