Suppose a flower had normal expression of genes A and C and expression of gene B in all four whorls. Based on the ABC hypothesis, what would be the structure of that flower, starting at the outermost whorl?

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#Question id: 3258

#Unit 11. Evolution and Behavior

Which of the following incorrect about genetic drift

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#Question id: 7226

#Unit 5. Developmental Biology

Experimental evidences suggest that control of proximal-distal specification of the limb is correlated with the age of the progress zone mesenchyme. Match the following experiment (Column I) with their results (Column II).

Column I	Column II
A. when an early wing bud progress zone was transplanted to a late wing bud	I. Normal limbs form
B. when a late wing-bud progress zone was transplanted to an early wing bud	II. Lack of intermediate structures
C. when an early wing bud progress zone was transplanted to an early wing bud	III. An extra set of ulna and radius formed
D. when a late wing-bud progress zone was transplanted to a late wing bud

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#Question id: 5139

#Unit 5. Developmental Biology

There are two broad categories of receptors that activate tyrosine kinases: (1) those in which the tyrosine kinase enzyme is an intrinsic part of the receptor’s polypeptide chain, called the_________ and (2) those, in which the receptor and kinase are separate polypeptides, encoded by different genes, yet are bound tightly together, called the __________.

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#Question id: 2130

#Unit 2. Cellular Organization

Peripheral membrane proteins:

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#Question id: 4675

#Unit 3. Fundamental Processes

Which of the following repressor work as both activate as well as repress transcription ?