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:

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.