Flag Botany> All of the following statements about DNA...
question mark

All of the following statements about DNA replication are true except ADNA replication begins with an RNA primer.BHydrogen bonds must be broken for replication to occur.CDNA replication begins at the promoter.DBacterial DNA replication proceeds in a circular fashion.EOne half of a new DNA strand must be assembled as small pieces instead of a continuous piece.

aman p , 4 Years ago
Grade 12
anser 2 Answers
Vikas TU

Last Activity: 4 Years ago

Dear student 
DNA replication begins at certain fixed unique points and is called origin.So, the correct answer is 'DNA replication begins at the promoter'.

ankit singh

Last Activity: 4 Years ago

A. Initiation of DNA synthesis always requires a smaller segment of RNA called RNA primer. It is synthesized by enzyme primase.
B. The two strands of DNA  double helix unwind with the help of DNA unwinding protein, called helicase. The unwinding occurs as this protein begins its binding with DNA strands, thus, breaking the hydrogen bonds between complementary nitrogenous bases.
C. DNA replication begins at certain fixed unique points and is called origin.
D. The chromosomes of bacteria are circular. Bacterial DNA replication occurs in a bidirectional way and proceeds with two replication forks in a circular manner.
E. Only one strand of DNA shows continuous replication which is called the leading strand. The other strand, called the lagging strand, replicates in a discontinuous manner by synthesizing short fragments called Okazaki fragments which are later joined by DNA ligase.
Hence, statement C is incorrect. So, the correct answer is 'DNA replication begins at the promoter'.

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...