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TLS Online TPP Program

#Question id: 1427

 In females, all the cells in a tumor have the same inactive X chromosome. The reason for this is that:

#Unit 4. Cell Communication and Cell Signaling

  1. all of the cells in a tumor are derived from a single progenitor cell.

  2. all late-stage tumors have chromosome abnormalities.

  3. multiple mutations are required for tumor induction.

  4. many tumor-suppressor genes are on the X chromosome.

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TLS Online TPP Program

#Question id: 23794

#Unit 7. System Physiology – Animal

The responses of amacrine cells produce 
TLS Online TPP Program

#Question id: 7505

#General Aptitude

A train running at 54 kmph takes 20 seconds to pass a platform .Next it takes 12 seconds to Pass a man walking at 6 kmph in the same direction in which the train is going. Find the length of the train and the length of the platform.
TLS Online TPP Program

#Question id: 3697

#Unit 3. Fundamental Processes

In the Meselson-Stahl DNA replication experiment, what percent of the DNA was composed of one light strand and one heavy strand after one generation of growth in 14N containing growth media?
TLS Online TPP Program

#Question id: 18703

#Unit 13. Methods in Biology

If the weight of 1 mol bp is 660g What will the no. of moles in 4 х 106 bp
TLS Online TPP Program

#Question id: 4309

#Unit 3. Fundamental Processes

Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?