In a particular species of mammal black hair (B) is dominant to green hair (b) and red eyes (R) are dominant to white eyes (r). If a BbRr individual is mated with a bbrrindividual the expected phenotypic ratio of the offspring is 1 black-red : 1 black-white: 1 green-red : 1 green-white. However, when you mate these individuals you find that the phenotypic ratio of the offspring is 6 black-red :1 black-white : 1 green-red : 6 green-white. What could account for this difference?

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#Question id: 3866

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements about E. coli RNA polymerase (core enzyme) is false?

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#Question id: 398

#Section 4: Fundamentals of Biological Engineering

One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that, when placed in an aqueous solution, dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). (See figure.)

If the pH of blood drops, one would expect ________.

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#Question id: 1892

#Section 2: General Biology

The Arthus reaction is characterized by an intense infiltration by:

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#Question id: 615

#Section 2: General Biology

The following data were obtained in the presence and absence of inhibitor. What type of inhibition is shown?

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#Question id: 20416

#Section 5: Bioprocess Engineering and Process Biotechnology

Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?