Which of the following statements is false ?
A. Spermatozoa can generally be found in the vagina of a living female three days after sexual intercourse.
B. Semen is unequivocally identified by the presence of spermatozoa.
C. Semen will contain the enzyme p30.
D. The likelihood of finding seminal acid phosphatase in vaginal swabs decreases with time.

Option A, Spermatozoa can generally be found in the vagina of a living female after three days

Explanation:

The average life of  spermatozoa in the female reproductive tract after ejaculation determines the fertility. Sperm survive for a longer period of time after it reaches the cervix. A spermatozoon (motile sperm) survives for nearly 2.5 hours in the vagina and 48 hours in the oviduct.

However, spermatozoa irrespective of its motility or viability can be found after coital ejaculation in the cervix and vagina even after 12 and 9 days respectively.  

Hence, option A is the correct choice of answer

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