AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which strand forms Okazaki Fragments?
A
Leading strand
B
Lagging strand
C
Left strand
D
Right strand
Explanation: 

Detailed explanation-1: -The second strand or the lagging strand is synthesized discontinuously in the 5′ to 3′ direction in the small fragments. These are called Okazaki fragments.

Detailed explanation-2: -Okazaki fragments are pieces of DNA that are transient components of lagging strand DNA synthesis at the replication fork.

Detailed explanation-3: -Abstract. In DNA replication, Okazaki fragments are formed as double-stranded intermediates during synthesis of the lagging strand. They are composed of the growing DNA strand primed by RNA and the template strand.

Detailed explanation-4: -lagging strand elongation Although each segment of nascent DNA is synthesized in the 5’ to 3’ direction, the overall direction of lagging strand synthesis is 3’ to 5’, mirroring the progress of the replication fork.

Detailed explanation-5: -The leading strand is continuously synthesized and is elongated during this process to expose the template that is used for the lagging strand (Okazaki fragments). During the process of DNA replication, DNA and RNA primers are removed from the lagging strand of DNA to allow Okazaki fragments to bind to.

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