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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: 10192

#Unit 6. System Physiology – Plant

Solar-tracking leaves present a nearly vertical position at sunrise, and during the night the leaves take a horizontal position, the sensing of light in solar-tracking leaves occurs in specialized regions of the leaf or stem, it can response for,
TLS Online TPP Program

#Question id: 5707

#Unit 8. Inheritance Biology

Which of the following statement is correct for human is heterozygous for inversion?
TLS Online TPP Program

#Question id: 8933

#Unit 9. Diversity of Life Forms

At which developmental stage should one be able to first distinguish a diploblastic embryo from a triploblastic embryo?
TLS Online TPP Program

#Question id: 4905

#Unit 8. Inheritance Biology

Which of the correct feature of genetic material effect?
TLS Online TPP Program

#Question id: 2599

#Unit 2. Cellular Organization

The mRNA from the trp operon has a half-life of only about____