A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
In all types of higher organisms (eukaryotes), the well organized nucleus contains definite number of chromosomes of definite size and shape. In prokaryotes hereditary material is not associated with proteins. It forms a single complex and is, therefore, considered to be equivalent to a single chrosome but simpler than it and hence prochromosome.
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