human life cycle and reproduction

• sexual reproduction - process of combining genetic materials from two different parents

  • use of gametes
• fertilization - process that involves the union of sperm and egg cell to produce zygote
• zygote - product of union of sperm and egg
• meiosis - sperm cell and egg cell are produced in a type of cell division

  • sex cells
  • 23 pieces
• mitosis - cellular division involving body cells

  • 46 / 23 pairs
• spermatogenesis - creation of sperm cell

  • spermatozoon
  • occurs in the male testis
• oogenesis - formation of egg cells

  • occurs in the female ovary
• haploid - cells that contain only half the number of chromosomes (23)

  ex. sperm & egg cell
• diploid - product of the union of two haploid cells

  • contains a complete set of chromosomes (46/23 pairs)
  • all body cells except sperm and egg cells