What is a restriction enzyme?

Answer 1

Restriction endonuclease, often called molecular scissors, are used to cut DNA at specific locations.
Restriction enzymes identify a special sequence of DNA known as a palindromic sequence.

Palindromic sequences occur when the 5'-to-3' sequence is the same on each DNA strand. They are identical when one strand read left to right , is the same as another strand read right to left .
Restriction endonuclease cuts the DNA at these palindromic sites.

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Answer 2

Julian Aguilar

A restriction enzyme is a type of enzyme that recognizes specific DNA sequences and cuts the DNA at or near those sequences. These enzymes are commonly used in molecular biology techniques such as DNA cloning and genetic engineering.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.