Inheritance of Chromosomes, Genes and DNA

• Inheritance?is the?transmission of genetic information from generation to generation
• Chromosomes?are located in the?nucleus?of cells
• They are?thread-like structures of DNA, carrying genetic information in the form of genes
• A?gene?is a short length of?DNA?found on a chromosome that?codes for a specific protein
• This could be a structural protein such as collagen found in skin cells, an enzyme or a hormone
• Genes control our characteristics as they code for proteins that play important roles in what our cells do
• Think about zomming into the nucleus of a cell, as shown in the diagram below
  • On the right is the zoomed-out view
  • Which zooms in as we read across the diagram right-to-left

?Genes are short lengths of DNA that code for a protein. They are found on chromosomes

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• Alleles?are?different versions of a particular gene. The ABO gene for blood group type has three alleles,?I^A, I^B?and?I^O
• Alleles give all organisms their characteristics