Urinary tract infections (UTIs) are rare in adult males younger than 50 years but increase in incidence thereafter. Causes of adult male UTIs include prostatitis, epididymitis, orchitis, pyelonephritis, cystitis, urethritis, and urinary catheters.
Definition: Gametes are reproductive cells (sex cells) that unite during sexual reproduction to form a new cell called a zygote. Male gametes are sperm and female gametes are ova (eggs). In seed bearing plants, p ollen is the male sperm producing gametophyte. Female gametes are contained within the plant ovary.
    A zygote is the resulting single cell that is formed from the  fertilization of a sperm and an ovum. After several divisions, it  implants in the uterus. It keeps dividing, producing more cells and  passes through the stages of embryo and fetus. zygote is the initial cell developed through sexual reproduction and formed when two gametes come together. In other words, a zygote results when the female egg is fertilize â¦ d. After rapid cell division, it eventually becomes an embryo. 20 people found this useful.