The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to

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#Question id: 1081

#SCPH28 | Zoology

Which of the following is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells?

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#Question id: 8862

#SCPH06 I Botany

The members of which class of the phylum Cnidaria occur only as polyps?

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#Question id: 8913

#SCPH06 I Botany

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

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#Question id: 13043

#SCPH28 | Zoology

In sanger’s sequencing chain termination is facilitated by:

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#Question id: 5250

#I Life Science/ Life Sciences Group – I-V

A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generatesnappropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?