A circular DNA with one palindrome if treated with required enzyme can form
(A) One fragment
(B) Two fragments
(C) Three fragments
(D) Four fragments

Name the enzyme used to combine two fragments of DNA .

A particle of mass 4m which is at rest explodes into four equal fragments. All four fragments scattered in the same horizontal plane. Three fragments are found to move with velocity v as shown in the figure. The total energy released in the process is

Circular DNA, RNA fragments and 70S ribosomes are seen in

Okazaki fragments are formed on one of the strand of DNA, known as

The enzyme used to join the DNA fragments is :

Which of the following enzyme is used to join DNA fragments :

An object of mass 3m splits into three equal fragments. Two fragments have velocities vhatj and v hati . The velocity of the third fragment is

An object of mass 3m splits into three equal fragments. Two fragments have velocities vhatj and v hati . The velocity of the third fragment is

A projectile is fired with velocity. v_0 at an angle 60^@ with horizontal . At top of its trajectory it explodes into two fragments of equal mass. If one fragment retraces the path then the speed of the other fragment is

A plasmid has two antibiotic-resistance genes, one for tetracycline and other for ampicillin. It is treated with a restriction enzyme that cuts in the middle of the ampicillin gene. DNA fragments containing a haemoglobin gene were cut with the same enzyme. The plasmids and fragments are mixed, treated with ligase and used to transform bacterial cells. Clones that have taken up the recombinant DNA are the ones that