Biology-B6-Key Terms 0.0 / 5 ? BiologyDNA and inheritanceGCSEAQA Created by: tonisha_Created on: 21-02-23 18:58 Gene? a short strand of DNA that codes for a type of protein 1 of 9 Allele? Different form/version of same gene 2 of 9 Genotype? example? combination/collection of alleles of a person e.g. bb 3 of 9 Homozygous? example? describes a genotype in which alleles for a characteristic are the same e.g. BB 4 of 9 Heterozygous? example? describes a genotype in which the alleles for a characteristic are different. e.g. Bb 5 of 9 Phenotype? example? the physical characteristics a person gets from the genotype e.g. BB may give a person blue eyes 6 of 9 Dominant allele? allele that is always expressed always the capital letter 7 of 9 Recessive allele? Overpowered/masked by dominant allele always lower case letter Only appears in phenotype when 2x recessive alleles are present 8 of 9 What is a fertilised egg cell called? zygote 9 of 9
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