Quick Answer. Curad advises that healing occurs in four stages with deep cuts: hemostatis, which occurs immediately; inflammation, which lasts up to 4 days; proliferation, which typically takes 21 days; and remodeling, which can take up to 2 years. Keep Learning.
Euler Problem 14: Longest Collatz Sequence. Euler Problem 14 looks at the Collatz Conjecture. These playful sequences, named after German mathematician Lothar Collatz (1910â1990), cause mathematicians a lot of headaches. This video introduces the problem much better than I can describe it.
Why would the same sequence show up in different gel bands in different individuals? The Southern Blot procedure breaks DNA into fragments using a restriction enzyme, runs the fragments on a gel, and then uses a specific labeled sequence as a probe. The DNA sequences are spaced out on the gel by length. The shortest sequence travels the furthest distance and the longest sequence travels the shortest distance. The pattern of bands is thus entirely due to the number and location of the restriction sites where the DNA is cut. The addition or loss of a single restriction site can place the target sequence in a new band on the gel even when the rest of the DNA is unchanged.