Question

DNA lays in palm, and the fingers have long ___ ___- where the incoming nucleotieds are grabbed and moved ___ degrees into the DNA and the template strand is flipped up and exposed waiting for the fingers to fit the right nucleotide

Answer 1

During DNA replication, there is a leading strand that is synthesized continuously and a lagging strand that is extended in small fragments called Okazaki fragments.

Step-by-step explanation:

The replication fork moves at the rate of 1000 nucleotides per second. DNA polymerase can only extend in the 5' to 3' direction, which poses a slight problem at the replication fork. As we know, the DNA double helix is anti-parallel; that is, one strand is in the 5' to 3' direction and the other is oriented in the 3' to 5' direction. One strand, which is complementary to the 3' to 5' parental DNA strand, is synthesized continuously towards the replication fork because the polymerase can add nucleotides in this direction. This continuously synthesized strand is known as the leading strand. The other strand, complementary to the 5' to 3' parental DNA, is extended away from the replication fork, in small fragments known as Okazaki fragments, each requiring a primer to start the synthesis. Okazaki fragments are named after the Japanese scientist who first discovered them. The strand with the Okazaki fragments is known as the lagging strand.