Name the technique which uses an enzyme that produces a colorimetric or luminescence product.

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#Question id: 15654

#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 mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

                      

Describe the basic genetic properties of the MelB– mutation?

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#Question id: 5448

#SCPH28 | Zoology

Plant height control by 3 pair of polygene, two varieties of maize averaging 48 and 72 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 60 inches in height. What is number of average phenotype out of 500 F2 plants?

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#Question id: 19302

#SCPH28 | Zoology

The assembly of various DNA sequences designed for easy identification of the construct and its efficient expression is termed as

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#Question id: 1560

#SCPH01 Biochemistry

An invertebrate, such as an insect, has innate immunity that can be nonspecific about which pathogens are prevented from harming its metabolism. Which of the following is most likely to function this way in the insectʹs intestine?

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#Question id: 9181

#SCPH28 | Zoology

Turnover of water in temperate lakes during the spring and fall is caused by which of the following?