Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Late wood has fewer xylary elements with narrow vessels.
Reason R : Cambium is less active in winters.
In the light of the above statements, choose the correct answer from the options given below :
The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
Which of the following stages of meiosis involves division of centromere?
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out