Question : [A]: Copy choice theory for crossing over was propos'ed by Belling. [R]: Accprding to this theory, pairedchromo- somes in Meiosis I, duplicate their genes before the development of fibres that join them in tandem.

Question : [A]: Copy choice theory for crossing over was propos'ed by

1.	Question : [A]: Copy choice theory for crossing over was propos'ed by Belling. [R]: Accprding to this theory, pairedchromo- somes in Meiosis I, duplicate their genes before the development of fibres that join them in tandem.
Answer» If both A and R are true and R is the correct EXPLANATION of A If both A and R are true but R is not the correct explanation of A If A is true and R is FALSE If both A and R are false ANSWER :B