In some goats, the presence of horns is produced by an autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 offspring are intercrossed to produce the F2. What proportion of the F2 offspring will have horns?

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#Question id: 14797

#Section 5: Bioprocess Engineering and Process Biotechnology

A culture of bacteria is infected in the bacteriophage at multiplicity of 0.3. The probability of a single cell infected with three phages is? 

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#Question id: 27052

#Section 4: Fundamentals of Biological Engineering

A membrane is used for separation of gases from waste. If the feed stream contains 20% CO2 and 80% SO2 and the product contains 25% CO2 and 75% SO2. Assume that the waste stream amounts to 80% of the input stream. What is the composition of CO2 in waste stream?

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#Question id: 1834

#Section 2: General Biology

Lepromatous leprosy is characterized by:

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#Question id: 12911

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the following:

A. DNA polymerases              i. Alkaline phosphatase        a.RNA-dependent DNA polymerase, used in cDNA synthesis

B. Reverse transcriptase        ii. T4 DNA ligase                    b. Thermostable DNA polymerase used in PCR

C. Ligases                                 iii.  AMV-RT                            c. Removes 5′-phosphates from DNA and RNA

D. Phosphatases                     iv. Taq DNA pol                      d. Links 5′-phosphate and 3′-hydroxyl ends via phosphodiester bond

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#Question id: 1640

#Section 2: General Biology

An immune response against grass pollen often involves: