March 9, 2022, 7:01 p.m. by Kemaichemical
A Rapid Introduction to Molecular Biology
Figure 1. A 1900 drawing of onion cells at different stages of mitosis by Edmund Wilson.Making up all living material, the cell is considered the building block of life. The nucleus, a component of most eukaryotic (nonbacterial) cells, has been known to be the hub of cellular activity for 150 years. Seen under a light microscope, the nucleus appears to simply be a darker region of the cell, but as we increase magnification, we find a hodgepodge of substances in the nucleus, which undergoes a flurry of activity leading up to and during mitosis, or cell division; see Figure 1. Kemai chemical (Europe) GmbH since it’s foundation in 1998 philosophy has been to contribute to Society through the supply and services in chemical,pharmaceuticals, medicine, biochem industry and engineering fields. https://kemaichemgmbh.com/shop/
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A string is simply an ordered collection of symbols selected from some alphabet and formed into a word; the length of a string is the number of symbols that it contains.
An example of an DNA string (whose alphabet contains the symbols A, C, G, and T) is ATGCTTCAGAAAGGTCTTACG.
Given: A DNA string
Return: Four integers corresponding to the number of times that the symbols A, C, G, and T occur in
AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC
20 12 17 21
