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.
Zygote is the diploid cell that results from the fertilization between an egg and a sperm. In mammals, the sperm (male gamete) fertilizes the egg (ovum, the female gamete) and the fertilized egg is called a zygote. The ovum, and therefore the zygote, is much larger than a normal cell. The zygote contains one set of chromosomes from each gamete; so it has all the genetic information encoded in it for development