Biotechnology Engineering (M.Phil./Ph.D.) 2016 Panjab University Entrance Exam With Answers

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16.

Two mammalian cell lines with doubling times of 12 h and 36 h were cultured with radioactive thymidine for 8 h. The cells were further cultured without the radioactive thymidine for 72 h. Incorporated radioactivity was measured in equal number of cells in each culture, which revealed that

A: Both the cell lines had the same amount of radioactivity
B: The fast growing cells had more radioactivity
C: The slow growing cells had more radioactivity
D: Neither of the cells had any radioactivity

The answer is: C