Biology 0.0 / 5 ? BiologyDNA and inheritanceGCSEAQA Created by: 114552Created on: 23-02-16 12:44 GENES A gene is a short section of DNA. Each gene codes for a specific protein by specifying the order in which amino acids must be joined together. 1 of 11 CHROMOSOMES The cells nucleus contains chromosomes made from lonf DNA molecules 2 of 11 DNA they are large and complex. they carry teh genetic code that determines the characteristics of a living thing 3 of 11 Boy xy 4 of 11 Girl ** 5 of 11 y chromsomes small chromsomes 6 of 11 how many pair of chromosomes does a human have? 23 pairs 7 of 11 Allele different version of the same gene 8 of 11 if the allele in a matching pair are different they are called ... ...hetrozygous alleles 9 of 11 if the alleles in a matching pair are the same they are called... ...homozygous alleles 10 of 11 In 22 pairs teh chromosomes are the same but ... ...the final pair are known as sex chromosomes - different 11 of 11
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