Which of the following is characteristic of most terrestrial biomes?

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#Question id: 3532

#SCPH28 | Zoology

In a plant species, flower color purple is dominant over white. One such purple-flowered plant upon selfing produced 35 viable plants, of which 9 were white flowered and the rest were purple flowered. What fraction of these purple-flowered progeny is expected to be pure purple-flowered line?

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#Question id: 2956

#SCPH01 Biochemistry

The product of the cdc2 gene is

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#Question id: 18904

#SCPH28 | Zoology

Advantages of using short half-life isotopes

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#Question id: 3642

#SCPH01 Biochemistry

Any piece of DNA which replicates as a single unit is called

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#Question id: 15617

#SCPH06 I Botany

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition you have a wild type (Lac+) strain carrying a Tn5 insertion known to be near several Lac genes on the E. coli chromosome. You grow P1 phage on this strain and use the resulting phage lysate to infect the lac1– strain, selecting for kanamycin resistance (Kanr). Among 100 Kanr transductants, you find that 82 are Lac– and 18 are Lac+. Express the distance between Tn5 and the lac1– mutation as a cotransduction frequency;