Which of the following restriction enzyme sites will be foun

Which of the following restriction enzyme sites will be found in the highest frequency in a 1 million base pair strand of DNA?

A.) GATC

B.) AATTCTAGAATT

C.) All of the above would be found in equal frequency

D.) GGATCC

Solution

thhere are 4 different base is present in the DNA. so the probability of repeating a base is 1/4 on a DNA strand. so the probability of finding the restriction enzyme cutting site is (1/4)ⁿ gap.

so the given restriction site n=4,12 and 6. so the the cutting site gap may be 256, 16777216 and 4096 so the maximum cutting site will be in the 256 base pairs gaps in 1 million base pair sequence, so the maximum restriction enzyme cutting site will be GATC