Which of the following threats to biodiversity is targeted at specific species rather than groups of species?

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#Question id: 15658

#SCPH01 Biochemistry

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

Next, you isolate a third mutant, MelC–, which gives constitutive melibiase expression. The MelC– mutation is closely linked to Mel1 and MelB–. Genetic tests of the MelC– mutation yield the following:

 

As above, classify the MelC– mutation in terms of its basic genetic properties and explain how you arrived at your conclusions.

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#Question id: 1708

#SCPH01 Biochemistry

When antigen reaches a lymph node in a primed animal:

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#Question id: 2621

#SCPH05 I Biotechnology

The leaky expression of lac genes ensures that,

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#Question id: 237

#SCPH12 I Genetics

Which of the following is mismatched?

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#Question id: 432

#SCPH06 I Botany

The ultimate product of complete oxidation of carbohydrates is ________.