Nmesoma comment yako, ulichoandika ni sahihi 50% nikiwa kama mwalim, hizo 50% ulizoshindwa ni kwenye spidi na life time of X and Y-sperms.
Y-sperm are the one which are faster than X-sperm and they die quickly (48 hours),
X-sperm, are slower in speed but they have long life span (72 hours).
Viti vingine viko sawa.
Ni kweli
