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TLS Online TPP Program

#Question id: 2912

HOTAIR is a lncRNA whose gene is found in the Hox C cluster in humans, but it acts by regulating expression of the Hox D genes on another chromosome (in trans) by recruiting to that locus Polycomb Repressive Complex 2. Which of the following statements is/are correct regarding this regulation?

#Unit 2. Cellular Organization

  1. PRC2 adds trimethyl groups to lysine 27 of histone H3, a mark (H3K27me3) associated with repressed gene expression.

  2. HOTAIR also recruits a second complex that removes histone modifications typically associated with active genes.

  3. Deleting the PRC2-binding domain of HOTAIR destroys its regulatory functions in both development and cancer.

  4. All of the above

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TLS Online TPP Program

#Question id: 3612

#Unit 8. Inheritance Biology

Multiple alleles control inheritance of
TLS Online TPP Program

#Question id: 2572

#Unit 2. Cellular Organization

If animals had alternation of generations like plants, ________.
TLS Online TPP Program

#Question id: 9150

#Unit 9. Diversity of Life Forms

For mountain ranges that are subjected to prevailing winds, why is the climate drier on the leeward (downwind) side?
TLS Online TPP Program

#Question id: 460

#Unit 1. Molecules and their Interaction Relevant to Biology

The hydrolysis of ATP to ADP has a △G°ʹ of -30 kJ/mol. If in an E. coli cell the concentrations of ATP, ADP and inorganic phosphate are 7.90 mM, 1.04 mM and 7.9 mM, respectively, which statement is true about the hydrolysis of ATP in the cell? (Assume a temperature of 298 K. R = 8.315 J/K-mol)
TLS Online TPP Program

#Question id: 24536

#Unit 11. Evolution and Behavior

If the given proportionate contribution of genotypes to the population is p2  WFF =0.04,  2pqWFS  =0.16 , 
q2 WSS = 0.16, then what will be the Relative genotypic frequency after selection of heterozygous ;