B1 - NEW 2011 SPEC 3.0 / 5 based on 1 rating ? BiologyGCSEOCR Created by: Former MemberCreated on: 30-11-12 17:14 Chromosomes Coils of DNA packed into structures; Can be arranged into pairs. Human cells have 23 pairs 1 of 11 Genes Carry Instructions that control how we develop and function 2 of 11 Functional Proteins Enable the body to function, eg: enzymes 3 of 11 Structural Proteins Give the body structure, eg: keratin 4 of 11 Human characteristics are determined by... Genes (eye colour), The environment (scars) or both (weight) 5 of 11 Genome The complete gene set of an organism 6 of 11 Genotype genetic make up 7 of 11 phenotype the physical features 8 of 11 Allelles Different forms of a gene 9 of 11 Homozygous two alleles are the same for a characteristic 10 of 11 Heterozygous two alleles are different for a characteristic 11 of 11
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