key terms-DNA

• Allele


  Different versions of the same gene
• Homozygous- two of the same alleles
• Heterozygous- two different alleles
• Dominant allele


  The allele masks the recessive
• Recessive allele


  The allele that only gets expressed when two copies are present (homozygous recessive)+ it gets masked by the dominant
• Genotype


  The entire collection of alleles an organism has
• Phenotype


  The characteristics an organism displays, determined by its genotype