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TLS Online TPP Program

#Question id: 7279

X chromosome number alone is the primary sex determinant in normal drosophila because:

#Unit 5. Developmental Biology
  1. The X chromosome contains genes encoding transcription factors that activate the critical gene in Drosophila sex determination.
  2. Male and female parts and their sex-linked characters are activated by Y chromosome.
  3. The number of X chromosome is greater than number of Y chromosome.
  4. Only X chromosome is active, Y chromosome is inactive.
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TLS Online TPP Program

#Question id: 1401

#Unit 4. Cell Communication and Cell Signaling

Which of the following are proto-oncogenes?

a. fos               b. myc             c. p53              d. ras               e. Rb
TLS Online TPP Program

#Question id: 1246

#Unit 4. Cell Communication and Cell Signaling

An SH2-containing protein contains a mutation that changes its binding pocket such that tyrosine and phosphotyrosine bind with equal affinity. As a result, MEK activity:
TLS Online TPP Program

#Question id: 12759

#Unit 10. Ecological Principles

As climate changes because of global warming, species? ranges in the northern hemisphere may move northward. The trees that are most likely to avoid extinction in such an environment are those that
TLS Online TPP Program

#Question id: 18729

#Unit 13. Methods in Biology

Which of the following is not a function of DNA topoisomerase?
TLS Online TPP Program

#Question id: 2694

#Unit 2. Cellular Organization

Which of the following is affected by palindromic sequences?