Alleles 0.0 / 5 ? BiologyDNA and inheritanceIGCSEAQA Created by: Nicole DCreated on: 07-12-13 12:38 Alleles 8 Questions 1 of 9 Each chromosome of a homologous pair carries genes for the same _____________ in the same place Characteristic 2 of 9 Each cell, therefore, has _____ genes for each characteristic Two 3 of 9 What are alleles? Alternative forms of the same gene 4 of 9 The DNA in the two chromosomes is therefore not quite ___________ Identical 5 of 9 What does it mean if someone is homozygous? If both chromosomes in a pair contain the same allele of a gene 6 of 9 What does it mean if someone is heterozygous? If the chromosomes in a pair contain different alleles of a gene 7 of 9 What is a dominant allele? An allele which controls the development of a characteristic when it is present on only one of the chromosomes 8 of 9 What is a recessive allele? An allele which controls the development of characteristics, only if the dominant allele is not present 9 of 9
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