When F1generation of a dihybrid is allowed to test cross, the expected ratio is of genotype when complete linkage?

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#Question id: 5250

#Section 3: Genetics, Cellular and Molecular Biology

A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generatesnappropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?

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#Question id: 27185

#Section 5: Bioprocess Engineering and Process Biotechnology

The reaction rate is defined as the rate at which the concentration of the reactants___with time or the concentration of products ___ with time.

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#Question id: 3933

#Section 3: Genetics, Cellular and Molecular Biology

A gene contains two 100 bp introns and three 50 bp exons. About how long is the mature RNA transcribed from this gene?

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#Question id: 14773

#Section 1: Engineering Mathematics

What is the probability that a digit selected at random from the logarithmic table is 1 ?

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#Question id: 14249

#Section 5: Bioprocess Engineering and Process Biotechnology

Aspartase enzyme is used industrially for manufacture of aspartic acid, a component of low-calorie sweetener. Fumaric acid and ammonia are converted to aspartic acid according to the equation:

 

                                        

Under investigation is a process using aspartase in intact Bacillus cadaveris cells. In the substrate range of interest, the conversion can be described using Michaelis-Menten kinetics with K m 4.0 gl^-1. The substrate solution contains 15% (w/v) ammonium fumarate; enzyme is added in the form of lyophilised cells and the reaction stopped when 85% of the substrate is converted. At 32⁰C vmax for the enzyme is 5.9 g l^-1h^-1 and its half-life is 10.5 d. At 37⁰C Vmax increases to 8.5 g l^{- 1} h^{- I} but the half-life is reduced to 2.3 d. The average downtime between batch reactions is 28 h. calculate the reactor volume required to produce 5000 tonnes of aspartic acid per year