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TLS Online TPP Program

#Question id: 15853

In XY cells, the early promoter is not active and there is no early Sxl protein because-

#Unit 5. Developmental Biology
  1. The X-encoded transcription factors have reached the threshold to activate the promoter
  2. The X-encoded transcription factors haven’t reached the threshold to activate the promoter
  3. The Y-encoded transcription factors haven’t reached the threshold to activate the promoter
  4. The Y-encoded transcription factors haven’t reached the threshold to activate the promoter
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TLS Online TPP Program

#Question id: 5090

#Unit 5. Developmental Biology

Which of the following is a correct description of the fate of the germ layers?
TLS Online TPP Program

#Question id: 5091

#Unit 5. Developmental Biology

In all vertebrate animals, development requires ________.
TLS Online TPP Program

#Question id: 5092

#Unit 5. Developmental Biology

The least amount of yolk would be found in the egg of a ________.
TLS Online TPP Program

#Question id: 5093

#Unit 5. Developmental Biology

Which of the following is a result of gastrulation in animals?

I) The archenteron is formed.

II) The body axes are established.

III) The germ layers are formed.
TLS Online TPP Program

#Question id: 5094

#Unit 5. Developmental Biology

Cell migration occurs extensively during ________.
TLS Online TPP Program

#Question id: 5095

#Unit 5. Developmental Biology

Changes in the shape of a cell usually involve a reorganization of the ________.