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Reproduction, Journey of, fertilization the sperm and ovum (egg) will…

- - - - During the development of an organism, cells differentiate into many types of cells.
      - A differentiated cell specializes to perform a certain task.
      - The bodies of all multicellular organisms, contain highly differentiated cells that carry out the jobs we need to perform to stay alive.
  - - - gametes
        
        the gametes will contain half the DNA of the original cell, and crossover during meiosis causes variability between each sperm.
- - - - when it grows to its full size, it divides into two.
- - - - grow below the soil - a potential of growing into a new plant
    - - runners - horizontal stems that run above the ground and produce new clone plants
  - - - Chromosomes condense &
        Crossing over occurs
    - - Chromosomes line up in the middle
    - - Homologous chromosomes
        
        move to the opposite poles of the cell
        
        two pieces of DNA within a diploid organism which carry the same genes, one from each parental source
    - - 2 cells are formed; each with 46 unique chromosomes.
    - - Chromosomes condense & line up in the middle
    - - All the DNA is replicated; now we have 92 chromosomes
    - - Chromosomes pulled apart
    - - 2 new cells form; now they each contain 23 unique chromosomes
    - - Ovogenesis
        
        creation of eggs
      - Spermatogenesis
        
        creation of sperm
- - - - If fertilization DOESN’T happen
        
        Egg travels along the fallopian tube to the uterus.
        
        leaves the body through the cervix and vagina
      - If fertilization DOES happen:
        
        Egg travels along the fallopian tube to the uterus.
        
        implants into the uterine lining for 9 months
        
        After 9 months:
        
        Fetus will go through the cervix then the vagina to be born
        
        fetus - a human embryo after eight weeks of development
        
        Zygote - fertilized egg cell
        
        union of a female gamete (egg, or ovum) with a male gamete (sperm)
- - - - During ejaculation, sperm travel into the vas deferens.
        
        Vas deferens bring sperm up to pass the seminal vesicle and prostate gland, where fluids are added.
        
        The fluid then leaves the body through the penis through the urethra.
        
        vas deferens. - tube that carries sperm from the epididymis to the urethra
      - epididymis - ordan in the male reproductive system in which sperm mature and are stored
- - - - uterus ->
        
        fallopian tube to reach the egg