genes and chromosomes

• genetics


  The DNA code of an individual. They determine traits and are inherited from generations.
• Chromosomes 


  String of DNA condensed into structures called chromosomes

  
• Chromosomes in Body Cells

  Humans have 46 chromosomes and are 'home' to sections of DNA
• Chromosomes in Sex Cells

  Egg and Sperm cells have 23 chromosomes each
• Number of Chromosomes in a Set

  46 chromosomes arranged in 23 pairs, with one set inherited from each parent
• Autosomal Chromosomes and Sex Chromosomes

  Autosomal chromosomes not involved in determining individuals sex and humans have 22 pairs.

  
  

  Sex chromosomes determine the individuals sex and humans have one pair.
• Sex Determination in Humans

  Represented with 'X and Y'. XX = Female, XY = Male.