Sunday, August 21, 2011

3.15 Genes



understand that a gene is a section of a molecule of DNA.
-photo below shows a DNA.
-one section is a gene- it carries the information which forms the characteristic of the organism. it could be the blood group or it could be the petal colour in a flower.
-genes are located in the nucleus
-information is passed to the cytoplasm and in the cytoplasm, that genetic information is formed into the protein, protein controls the production of the characteristics.
-information flows the gene (in nucleus) to the protein (in cytoplasm)


question- can there be different size genes? eg. would the size of a gene which forms the characteristics of a blood group be bigger/smaller than the one which forms the characteristics of the petal of a flower?




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