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Process of DNA Replication

The DNA restr...

Question

The DNA restriction site recognized by the enzyme Hind $I I I$ is $\frac{A A G C T T}{T T C G A A}$ Which of the following sequence contained in a double stranded DNA is cut by Hind $I I I$ ?

A

Only Q

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B

Both Q and R

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C

Only R

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D

All of them

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Solution

The correct option is A Only Q
There is no sequence given in the question.

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Q. Which of the following sequences along a double stranded DNA molecule may be recognized as a cutting site for a particular restriction enzyme ?

Q. Which of the following statements are correct?
(i) Restriction enzymes may cut the DNA strand a little away from the centre of the palindromic sequence, but between the same two bases on the opposite strands.
(ii) Hind ll always cuts DNA molecules at a particular site by recognising a specific sequence of six base pairs.
(iii) DNA is a positively charged molecule.

Q. The DNA sequence that the restriction enzyme recognizes and the restriction site at which it cuts are always the same.

Q. 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 II always cuts DNA molecules at a particular point by recognising 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.

Q. The restriction cut by enzyme BamH I that recognizes a palindromic sequence and leaves one strand longer than the other would produce a DNA that looks like

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