The primitive streak in a bird is the functional equivalent of :

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#Question id: 2604

#SCPH05 I Biotechnology

Best inducer of the lac operon;

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#Question id: 8715

#SCPH28 | Zoology

Which of the following items is most likely to form a simple linear relationship with the number of gene-duplication events, when placed as the label on the vertical axis of the following graph?

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#Question id: 7701

#SCPH28 | Zoology

The various taxonomic levels (for example, phyla, genera, classes) of the hierarchical classification system differ from each other on the basis of ________

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#Question id: 4346

#SCPH06 I Botany

Which of the following results would occur if the repressor of an inducible operon were mutated so that it could not bind the operator?

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#Question id: 3868

#SCPH01 Biochemistry

The sigma factor of E. coli RNA polymerase: