The lac operon has three paradoxes

if the operon is in a repressed state, how does the inducer enter the cell to start the process of induction

 If the operon is in a repressed state, how Repressor is removed with allolactose 

 How is allolactose synthesized in Repressed state Answer is Leaky Expression

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#Id: 1050

#Unit 5. Developmental Biology

Fgf8 is the major active factor in the AER.

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#Id: 1051

#Unit 5. Developmental Biology

Homeobox transcription factors, or Hox genes, play an essential role in specifying whether a particular mesenchymal cell will become stylopod, zeugopod, or autopod.

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#Id: 1052

#Unit 5. Developmental Biology

Hox9 and Hox10 paralogues specify the stylopod

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#Id: 1053

#Unit 5. Developmental Biology

Hox11 paralogues specify the zeugopod

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#Id: 1054

#Unit 5. Developmental Biology

Hox12 and Hox13 paralogues specify the autopod.

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#Id: 1055

#Unit 5. Developmental Biology

AER of the fin bud changes into an apical ectodermal fold that promotes fin ray development.