The smallest unit of recombination in the chromosome is called___________________?

A. Barley
B. Rice
C. Date palm
D. None of these

A. SO
B. SO3
C. SO2
D. None of the above

A. Lysimeter
B. Tensiometer
C. Piezometer
D. Barometer

A. USA
B. Japan
C. The Neterlands
D. Pakistan