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Restriction enzyme Eco RI cuts the DNA b...

Restriction enzyme Eco RI cuts the DNA between bases G and A only when the sequence in DNA is:

A

GATATC

B

GAATTC

C

GATTCC

D

GAACTT

Text Solution

Verified by Experts

The correct Answer is:
B
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Eco RI cleaves the DNA strands to produce

Restriction enzymes are used to cut single-stranded DNA.

Which of the following statements does not hold true for restriction enzyme? (a) It recongnises a palindromic nucleotide sequence (b) It is an endonuclease. (c) It is isolated from viruses (d) It produces the same kind of sticky ends in different DNA molecules

Which of the following statements are correct ? (i) Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome site, but between the same two bases on the opposite strands. (ii) Hind ll always cuts DNA molecules at a particular point by reconginisng a specific sequence of six base pairs. (iii) Separated DNA fragments cannot be visualised without staining on an agarose gel electrophoresis. (iv) 'Ori' is the sequence responsible for controlling the copy number. (v) DNA is a positively charged molecule.

Read the given statements and select the correct option, Statement 1 : Restriction endonuclease enzymes recognise a specific palindromic nucleotide sequence in the DNA Statement 2: Restriction endonuclease enzymes are called as molecular scissors or biological scissors.