Deleting arrays

Another way to calculate the value of a determinant is to evaluate its cofactors. The cofactor of an element a- of the matrix is found by first deleting from the original matrix the ith row and yth column corresponding to that element the resulting array is the minor (M. ) for that element and has dimension (n - 1) X (n - 1). The cofactor is defined as... 

Yeast gene arrays, 26 490, 491 Yeast gene deletion libraries, 26 490-492 Yeast genome, 22 515, 26 446 comparison of, 26 450t Yeast leavening... 

With the correct source cells in the input line and pushing the OK button while holding the SHIFT+CTRL keys, the equivalent result as in Figure 2-3 is obtained. Importantly, once an array of cells has been declared a matrix by applying the SHIFT+CTRL+ENTER or the SHIFT+CTRL+OK combination, it is no longer possible to alter or delete its individual cells. Always, the whole array has to be pre-selected and thus only the complete array can be modified. 

The same technique can be used to modify a compound that particularly interests researchers. Suppose this compound almost but not quite fulfills an engineer s requirements. Perhaps after a slight modification, such as the addition of a hydroxyl group (OH) at a certain point or the deletion of an acidic group elsewhere, the compound will work. Researchers may set up conditions in which the compound reacts with a number of chemicals, producing a vast array of compounds that have the same basic structure but differ by a chemical group or two. Somewhere in this collection may be a winner. 

Stanczak CM, Chen Z, Zhang YH, Nelson SF, McCabe ERB (2007) Deletion mapping in Xp21 for patients with complex glycerol kinase deficiency using SNP mapping arrays. Hum Mutat 28 235-242... 

In addition to single-nucleotide substitutions or small insertions or deletions detected by DNA sequencing, rtPCR or SNP arrays, different sources of... 

SNP arrays result useful to detect DNA rearrangements by an indirect approach. In this case, the result will be measured as a loss of heterozygosity, a statistical value which measures DNA deletions due to statistical deviations from the expected rate in the different alleles. Loss of heterozygosity can also be measured at a shorter scale by capillary electrophoresis, in this case restricted to individual gene analysis (92). 

Tong AH, Evangelista M, Parsons AB, Xu H, Bader GD, Pag6 N, Robinson M, Raghibizadeh S, Hogue CW, Bussey H, Andrews B, Tyers M, Boone C. Systematic genetic analysis with ordered arrays of yeast deletion mutants. Science 2001 294 2364-2368. 

Word processors usually have an array of features designed to make editing documents easy. In addition to the simple editing procedures described above, the program usually allows blocks of text to be moved ( cut and paste ), copied or deleted. 

Since a single formula is entered in all the cells of an array, you can t change or delete part of an array if you try, you ll get a "Carmot change part of an array" message. 

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