B13- DNA and inheritance 4.0 / 5 based on 2 ratings ? BiologyDNA and inheritanceGCSEAQA Created by: SherminbabayiCreated on: 06-02-18 21:47 What is meant by the dominant allele? An allele that only needs to be present once in order to be expressed, represented by eg: B 1 of 6 What is meant by the recessive allele? An allele that will only be expressed if both are present, represented by eg: b 2 of 6 What is meant by an allele? alternative forms of a particular gene 3 of 6 What are genes? Genes are parts of chromosomes, made up of DNA, which code for proteins. 4 of 6 Homozygous when an individual carries two copies of the same allele for a gene, eg: Bb 5 of 6 Heterozygous when an individual carries two different alleles for the same gene, eg Bb 6 of 6
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