It all starts with the human body then it goes to the cell witch leads on to the chromosome and then the genes and last but not least your DNA.each chromosome is made up of specific parts called genes.Each gene contains the genetic information for a specific trait.Each gene is made up of DNA.Inside the nucleus are structures that contain genetic materials witch are chromosomes. Replication is part of DNA watch means when the genetic information is copied. Heredity is when specific traits or genetic information is pass from parents to the kid.traits is the specific charecteristics of a cell.
http://www.eurogentest.org/content/images/unit6/patientLeaflets/english/genesChromosomesDna.jpg
http://www.eurogentest.org/content/images/unit6/patientLeaflets/english/genesChromosomesDna.jpg
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