geneticist is working with a new bacteriophage called phage Y3 that infects E. coli. He has isolated eight mutant phages that fail to produce plaques when grown on E. coli strain K. To determine whether these mutations occur at the same functional gene, he simultaneously infects E. coli K cells with paired combinations of the mutants and looks to see whether plaques are formed. He obtains the following results. (A plussign means that plaques were formed on E. coli K; a minussign means that no plaques were formed on E. coli K.)

How many cistron belong to these mutation?

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#Question id: 4599

#SCPH28 | Zoology

Many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of ________.

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#Question id: 22950

#SCPH06 I Botany

APETALA1 belongs to the transcription factor family:

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#Question id: 5580

#SCPH01 Biochemistry

The innermost layer of the root cortex is the

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#Question id: 418

#SCPH01 Biochemistry

Biological oxidation-reduction reactions always involve:

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#Question id: 81

#SCPH01 Biochemistry

The Fischer projections of linear D-glucose and D-galactose are shown below. These two molecules are