E. coli cells grown on 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?

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#Question id: 5258

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following processes are not correct for conjugation?

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#Question id: 3261

#Section 3: Genetics, Cellular and Molecular Biology

A parent population (P) is change into daughter populations (Q) which grow in habitats. After 1000 generations, the equilibrium frequency distribution of of the daughter populations is shown in the figure below. For reference, the vertical line represents the mean of the parent population. Which type of natural selection?

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#Question id: 3252

#Section 3: Genetics, Cellular and Molecular Biology

 The unaffected brother of a cystic fibrosis affected girl is referred for genetic counseling. Assume that the population is in Hardy-Weinberg equilibrium. Which of the following is correct?  (Cystic fibrosis is an autosomes recessive inheritance with an incidence of 1 in 2500).

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#Question id: 15259

#Section 6: Plant, Animal and Microbial Biotechnology

Which media are called as general purpose media because they support the growth of many microorganisms.

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#Question id: 14459

#Section 1: Engineering Mathematics