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TLS Online TPP Program

#Question id: 7266

After brief examination of the evolution of the tetrapod limb, from fish fins to human hands, has hopefully illuminated the importance of Hox gene regulation during limb development. Hox genes are critical for:

#Unit 5. Developmental Biology
  1. Specifying fates along each axis of the limb, and their expression is under the influence of signals emanating from the flank (proximal) and AER (distal), among others.
  2. Specifying fates along proximal-distal axis of the limb, and their expression is under the influence of signals emanating from the flank (proximal) but not from AER (distal).
  3. Specifying fates along each axis of the limb, by maintaining the expression of retinoic acid distally.
  4. Specifying fates along proximal-distal axis of the limb, and their expression is under the influence of signals emanating from the AER (proximal).
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TLS Online TPP Program

#Question id: 24441

#Unit 13. Methods in Biology

If the heart rate is 90 beats/min, what is the cycle length?
TLS Online TPP Program

#Question id: 1981

#Unit 4. Cell Communication and Cell Signaling

Which of the following is accounted for by immunological memory?
TLS Online TPP Program

#Question id: 28676

#Unit 2. Cellular Organization

Which of the following protein is responsible for the formation of the mitotic spindle as well as for chromosome segregation?
TLS Online TPP Program

#Question id: 3947

#Unit 3. Fundamental Processes

Of the following statements about the aminoacyl tRNA synthetases, which one must be true?
TLS Online TPP Program

#Question id: 19824

#Unit 12. Applied Biology

Several biochemical reactions heading to the production of active oxygen species, phytoalexin biosynthesis occurs due to