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Question
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
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Solution
The chromosomal theory of inheritance was proposed by Sutton and Boveri in 1902.
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Multiple Choice Question
Chromosomal aberrations are caused by:
What' does 'P' and 'Q' represent in the following diagram of X and Y chromosomes? Select the correct option representing, its appropriate description.

Which of the following is TRUE with respect to the genes which inherit together during crossing over?
Small swellings on the surface of the chromosome are called______.
