Question

When a DNA molecule is described as replicating bidirectionally, that means that it has two:

Group of answer choices
A. independently replicating segments.
B. termination points.
C. chains.
D. replication forks.
E. origins.

Answer 1

Answer:

D) Replication forks.

Explanation:

When the DNA is replicating bidirectionally, that means the DNA is replicating in two directions from the starting point at the same time resulting in the formation of two strands i-e leading and lagging.

Leading strands undergoes rapid replication while the lagging strand undergoes slow replication and forms okazaki fragments.

As DNA is replicating in two directions from the starting point, two replication forks (area where DNA replication occurs actively) are formed both  moving in opposite direction.

Hence option D) Replication froks is the right answer.

Answer 2

It has two replication forks. The correct option is D.

The following information should be considered:

• At the time when the DNA is replicating bidirectionally, so it means the DNA is replicating in two directions  i.e. from the beginning point at the same time that resulted in the formation of two strands i-e leading and lagging.
• Leading strands undergoes rapid replication while on the other hand the lagging strand undergoes slow replication and forms okazaki fragments.
• As DNA is replicating in two directions from the starting point, two replication forks  i.e. area where DNA replication arise actively) are formed both moving in opposite direction.

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