Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?

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#Question id: 1120

#SCPH01 Biochemistry

A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?

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#Question id: 1120

#SCPH06 I Botany

A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?

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#Question id: 1120

#SCPH28 | Zoology

A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?

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#Question id: 1121

#SCPH01 Biochemistry

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?

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#Question id: 1121

#SCPH28 | Zoology

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?

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#Question id: 1122

#SCPH01 Biochemistry

In endocrine signaling, the signaling molecule.