During the prophase the nucleoli in the nucleus disappear. The chromatin fibers become tightly ccoiled and condense into chromosomes. Chromosomes line up in pairs and are joined at the centromere. In the cytoplasm, the spindle fibers begin to formand are made of microtubules.
Answer: Portrayal of thermal convection as a mechanism.
if its not right im srry :(
but if it is your welcome :D
XX Chromosome and Male have XY chromosome.
