EcoRI and HindIII Are

Question

EcoRI and HindIII are
A)palindromes.
B)reverse transcriptases.
C)restriction endonucleases.
D)ligases.
E)DNA polymerases.

Accepted Answer

EcoRI and HindIII are both restriction endonucleases that cut DNA at specific sequences, known as restriction sites. EcoRI recognizes and cuts the sequence GAATTC, while HindIII recognizes and cuts the sequence AAGCTT. Both enzymes are commonly used in molecular biology to cut DNA for cloning or analysis purposes.

Answer: A
 EcoRI and HindIII are both palindromes, meaning they read the same forwards and backwards. For example, the EcoRI sequence GAATTC is the same when read in the opposite direction (CTTAAG). This palindrome property is important for these enzymes to cut DNA in a specific manner.