A linear DNA has two sites for a particular restriction enzyme. How may fragments are produced in a complete digestion? Group of answer choices 1 2 4 3

Humans have very similar DNA sequences, with approximately 999/1000 letters being ide One possible way of telling the difference between these very similar sequences is by: Genetic engineering Analyzing RFLPS using gel electrophoresis Comparing the total amount of DNA from two or more people

The same restriction endonuclease must be used to excise the foreign DNA and bacterial DNA. Select one: True False

Which of the following sequences, in the double-stranded form, can probably be recognized by a restriction enzyme?   Choose an answer from below? TTCCTT CGACGA GTCGAC GGTTGG GAGGAC

Restriction endonucleases are bacterial enzymes that cleave duplex (double-stranded) DNA at specific nucleotide sequences. The mode of replication of the animal virus SV40 has been investigated by using restriction endonucleases that cleave SV40 DNA into a number of unique segments. Like most viruses, SV40 DNA is circular. The map positions of the 11 fragments produced by a pair of restriction endonucleases are shown on the next page. Immediately following a 5 or 10 minute pulse of radioactively labeled thymidine, labeled SV40 molecules that have completed replication during the pulse are isolated. These newly replicated DNA molecules are digested by the restriction endonucleases and the resulting fragments are analyzed for the relative amounts of pulse label they contain. The results are in the table below. Assume that at the time the label was added there was a random population of replicating SV40 DNA molecules in all possible stages of synthesis. From the information given below,…

The genomic DNA of a bacterial cell is NOT destroyed by the cell’s own restriction enzymes because   Choose an answer from below: the bacterial DNA is too small to contain the recognition sequence for the enzymes. the restriction sites are occupied by histones. the genome is protected by the nuclear membrane. the restriction recognition sequences in the genome are protected by a microRNA. none of the above