Sunday, August 21, 2011

3.14 Chromosomes



1. Chromosomes have DNA

Sections of the DNA are called Genes


Each Gene carries the information for the construction of a protein - gives characteristic e.g blood group




2. Different Organisms have different amounts of Chromosomes, e.g Humans have 45




3. They operate in pairs - Homologous Pairs



4. The same position/loci on the pair has the same gene (seperate versions for one characteristic)



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