When the vertebrate embryo grows into a hollow ball, it is called a

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#Question id: 5742

#XL - S Microbiology

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

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#Question id: 1121

#XL - Q 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: 34083

#XL - S Microbiology

Which of the following are functions of bacterial cell walls?

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#Question id: 433

#XL - S Microbiology

Fatty acid synthesis occurs in the ________, while fatty acid breakdown occurs in the

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#Question id: 10136

#XL - R Botany

A protein complex contain a Rieske protein known as