When a new gene is discovered, a standard approach to understanding its function is to look through a database of known genes and find close matches. the closeness of two genes is measured by the extent to which they are aligned. to formalize this, think of a gene as being a long string over an alphabet σ = {a, c,g, t}. consider two genes (strings) x = atgcc and y = tacgca. an alignment of x and y is a way of matching up these two strings by writing them in columns, for instance:

What are the major differences between injection molding and extrusion?

What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces. a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.

In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?