Question

1) the DNA section has the following nucleotide composition 3'TTSAGTTSAATTGCA5'. Write the nucleotide composition of the daughter DNAs formed as a result of the replication of the original DNA fragment Questions: 1. Indicate the directions of the DNA strands. 2. Why does the formation of daughter DNA chains go in different directions? 3. By what principles is the second strand of DNA built? 4. Describe the principles of DNA replication.

Answer 1

During DNA replication, the leading strand is synthesized continuously in the 5' to 3' direction, while the lagging strand is synthesized in small fragments known as Okazaki fragments. DNA replication occurs in different directions because of the antiparallel nature of the DNA double helix. The second strand of DNA, the lagging strand, is built in small fragments called Okazaki fragments.

Step-by-step explanation:

The nucleotide composition of the daughter DNAs formed as a result of the replication of the original DNA fragment is as follows:

Leading strand (copied continuously in the 5' to 3' direction): 5'AGTTCAATTAACGTA3'

Lagging strand (copied in small fragments in the 5' to 3' direction, known as Okazaki fragments): 5'TTCAATATACCTGGG3'

The direction of DNA strands is determined by the antiparallel nature of the DNA double helix.

The formation of daughter DNA chains go in different directions because polymerase can add nucleotides only in the 5' to 3' direction.

The second strand of DNA, known as the lagging strand, is built in small fragments called Okazaki fragments. Each Okazaki fragment requires a primer to initiate synthesis.

The principles of DNA replication include the separation of the DNA strands, using each strand as a template to synthesize a new complementary strand, and the formation of two identical daughter DNA copies.