Lab Dna Restriction Enzyme Simulation Answer Key !new! ❲2025❳

In many simulations (like those using Lambda phage DNA), you are asked to predict and record the number and size of fragments. Standard results for common enzymes include: Restriction Enzyme Recognition Site # of Fragments Fragment Sizes (Approx. Base Pairs) G^AATTC 21226, 7421, 5804, 5643, 4878, 3530 BamHI G^GATCC 16841, 7233, 6770, 6527, 5626, 5505 HindIII A^AGCTT 23130, 9416, 6682, 4361, 2322, 2027, 564 Key Concepts & Discussion Questions

Tip: Emphasize that the 300 bp doublet runs as one thicker band.

: These act as "molecular scissors" that cut double-stranded DNA at precise recognition sites, usually 4–8 base pairs long. Palindromes Lab Dna Restriction Enzyme Simulation Answer Key

Answer: EcoRI.

: Represents DNA Ligase, the "glue" that joins fragments. In many simulations (like those using Lambda phage

Restriction enzymes are proteins that are produced by bacteria as a defense mechanism against viral infections. They work by cleaving foreign DNA, such as viral DNA, into smaller fragments that are unable to replicate. Each restriction enzyme recognizes a specific sequence of nucleotides, known as a restriction site, and cuts the DNA at or near this site.

EcoRI cuts lambda at 5 sites: coordinates 21,226; 26,104; 31,747; 39,168; 44,972 (in the classic GenBank map). Therefore, 6 fragments (linear DNA with n cuts = n+1 fragments). Sizes: 21,226 – 0 = 21,226 bp; then 26,104-21,226 = 4,878; 31,747-26,104 = 5,643; 39,168-31,747 = 7,421; 44,972-39,168 = 5,804; and 48,502-44,972 = 3,530. Fragments in bp: 21,226; 7,421; 5,804; 5,643; 4,878; 3,530. : These act as "molecular scissors" that cut

What does “palindromic sequence” mean in DNA terms?

Let’s construct a typical simulation problem and its answer key. Assume a circular plasmid of with the following restriction sites: