objective 3.15. understand that a gene is a section of a molecule of D.N.A.
*D.N.A. is in a double helix shape. a section of the molecule is called a gene
*genes have information which has a characteristic of an organism e.g. blood group or petal colour -in a flower-
genes are located in the nucleus. this information passed to cytoplasm
in cytoplasm genetic information is transformed into a protein which controls the production of the characteristic,
the information flows to the gene (in nucleus) to protein (in cytoplasm)
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