The paramecium would not be able to get rid of excess water so the cell would burst.
FUNCTION OF THE CONTRACTILEVACUOLE:
The contractilevacuole is an organelle present in protist organisms like paramecium, amoeba etc.
The contractilevacuole functions to regulate water balance in the cells of organisms that they are found. Contractilevacuole performs this function by storing excess water and expelling the out of the cell.
Hence, if a disease affected a paramecium's contractilevacuoles, stopping the normal functioning of the vacuoles, the paramecium would not be able to get rid of excess water so the cell would burst.
If only 50% of weight genes are transferred as seen in 0.5 probability then the ideal weight will be 14 grams (9 grams from first and 5 grams from the 2nd and so... ). But due to the genetic anomalies the range should be taken as 13-15 grams with a confidence interval of 95%...