Answer:
Natural enzymes called restriction enzymes Can cut and copy DNA at specific sites. Then the DNA fragments can be separated by the process of gel electrophoresis.
Explanation:
Restriction enzymes recognize restriction sites in the DNA and bind to them. Then they will cut the two DNA strands and give two separate sequences of DNA that can bind to another piece of DNA if the sequence match.
Gel electrophoresis will separate the different cut fragments of DNA by size and charge. The scientists put the DNA fragments in indentations in the gel, then the gel is placed into a gel box with a buffer solution, a negative electrode near the indentations, and a positive electrode on the bottom. When the electric current goes through the gel, the DNA fragments will start to descend towards the positive electrode since the DNA has a negative charge. As a result, DNA strands will descend faster through the gel's pores than the larger strands. The final step is to dye the gel to see the different bands with fragments of various DNA sizes.
The correct answer is: the history of the patient's skin condition confirmed the doctor thinks the patient has skin cancer.
According to the dermatology clinic note, the doctor performed a skin biopsy on the patient and the results confirmed his diagnosis of actinic keratosis. Actinic keratosis is a precancerous condition, which expresses as lesions forming on the top layer of the sun-damaged skin. When diagnosed early, it is highly treatable. Therefore, in this example, the doctor diagnosed a precancerous condition and not skin cancer.
Answer by YourHope:
Facts are based off observations, while theories are based off an account of a phenomenon that may or may not be true!
:)
Answer:
it's E) hawks
Explanation:
because the energy gets smaller as the predators increase.
Answer:
-5a-2
Explanation:
the - changes the numbers in the second pair of parinthacies to changes to the opposite signs
