#Question id: 39505
#Biochemistry
Which of the following statements are correct?
I. DNA replication occurs in 5′ → 3′ direction
II. Okazaki fragments are formed on lagging strand
III. DNA ligase joins RNA primers
#Question id: 39506
#Biochemistry
Regarding non-coding DNA:
I. It includes regulatory sequences
II. It plays no role in gene expression
III. It includes introns and repetitive DNA
#Question id: 39507
#Biochemistry
Concerning PCR:
I. Denaturation occurs at high temperature
II. Annealing involves primer binding
III. Extension is carried out by RNA polymerase
#Question id: 39508
#Biochemistry
Regarding transgenic crops:
I. They may reduce the need for chemical pesticides
II. They can raise ecological and ethical concerns
III. They are completely risk-free
#Question id: 39509
#Biochemistry
Assertion (A): DNA polymerase cannot initiate DNA synthesis de novo.
Reason (R): DNA polymerase requires a free 3′-OH group.
#Question id: 39510
#Environmental Science
The most penetrating radiation is: