Question

Which description of DNA replication is correct?

- A polymerase constructs a new strand alongside each old one by pairing complementary nucleotides.
-Ligase assembles single-stranded codons; then polymerase knits these codons together into a DNA strand.
-The two strands of DNA separate, and restriction enzymes cut up one strand. Then polymerase synthesizes two new strands out of the old ones.
- The two strands separate, and each one gets a complementary strand of RNA. Then this RNA serves as a template for the assembly of many new strands of DNA.
- Primase assembles the complementary strands of DNA. Ligase then links the two strands together.

Answer 1

During DNA replication, a polymerase constructs a new strand alongside each old one by pairing complementary nucleotides. The leading strand is continuously synthesized in the 5' to 3' direction, while the lagging strand is synthesized in short fragments called Okazaki fragments. Ligase then joins the Okazaki fragments together, completing the synthesis of the lagging strand.

Step-by-step explanation:

A polymerase constructs a new strand alongside each old one by pairing complementary nucleotides.

The process of DNA replication involves the separation of the two strands of DNA and the synthesis of new strands using the existing ones as templates. One strand, called the leading strand, is continuously synthesized in the 5' to 3' direction, while the other strand, called the lagging strand, is synthesized in short fragments called Okazaki fragments.

Ligase then joins the Okazaki fragments together, completing the synthesis of the lagging strand.