A. X and Y chromosomes have descended from a common, very ancient autosome pair. 

B. X and Y chromosomes have descended from different autosome. 

C. During evolution, the X chromosome has retained most of the original genes, whereas the Y chromosome has lost most of them.

D. During evolution, the X chromosome has lost most of them, whereas the Y chromosome has retained most of the original genes.

Which of the following is correct combination

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#Question id: 3980

#Unit 3. Fundamental Processes

Which of the following statements correctly describes promoters in E. coli?

TLS Online TPP Program

#Question id: 24212

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement

a. Hexokinases IV remains sequesters in the nucleus in case of high F-6-P and high ATP

b. Hexokinases IV remains sequesters in the cytoplasm in case of high F-6-P and high ATP

c. Hexokinase requires Mg+2 for its activity, because the true substrate of the enzyme is not ATP4- but the MgATP2- complex.

d. Hexokinase requires Mg+2 for its activity, because the true substrate of the enzyme is MgATP4- but not the MgATP2- complex.

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#Question id: 7548

#General Aptitude

 It takes 10 s and 15 s respectively, foe two snakes travelling at different constant speeds to completely pass a small pebble. The length of the first snake is 120 cm and that of the second snake is 150 cm. the magnitude of the difference in the speeds of the two Snakes (in cm/s) is;

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#Question id: 4317

#Unit 3. Fundamental Processes

Which of the following functions does the product of the p53 gene carry out?

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#Question id: 1741

#Unit 4. Cell Communication and Cell Signaling

B-cells as distinct from T-cells: