Which of the following is true about the DNA samples?
A: Sample 2 had more restriction sites than the other samples.
B: Sample 1 is the smallest DNA fragment.
C: Samples 4 and 3 are the same DNA fragment.
D: Samples 1 and 2 are the same DNA fragment.
A: Sample 2 had more restriction sites than the other samples.
B: Sample 1 is the smallest DNA fragment.
C: Samples 4 and 3 are the same DNA fragment.
D: Samples 1 and 2 are the same DNA fragment.
举一反三
- Counter samples can also be called （ ）. A: duplicate samples B: sealed samples C: confirmed samples D: reference sample
- After receiving foreign buyer’s samples, the seller will provide "equivalent samples" for confirmation by the buyer. In this way, there is a transfer from sale by buyer's sample to ( ) . A: Sale by Buyer's Sample B: Sale by Seller's Sample C: Sale by Equivalent Sample D: sale by inspection
- Duplicate samples can also be called（） A: Counter samples B: sealed samples C: confirmed samples D: reference samples
- Methods section It typically consists of four subsections: 1) participants; 2) materials; 3) samples; and 4) procedures.
- In<br/>E.coli, the RNA primer at the beginning of each Okazaki fragment is is removed by 。 A: DNA polymerase B: DNA polymerase I C: DNA polymerase II D: DNA polymerase