genetics 🧬

• Trait

  A feature, characteristic, or quality that is passed down from parent to offspring
• Factor


  A variation of a trait
• Gene


  Unit of inheritance and/or portion of DNA that determines a trait
• Allele


  Different versions/variations of a gene for the same trait
• Genotype


  Combination of alleles that an individual has
• Phenotype


  Variation of a trait that is expressed shown in a individual
• Dominant


  The allele that will be expressed when present in a genotype
• Recessive


  The allele that will only be expressed if no dominant allele is present in the genotype
• Homozygous


  A genotype in which the two alleles are the same (pure breeding)
• Heterozygous


  A genotype in which the two alleles are different
• DNA - made from nucleotides (polymer)
• Hydrogen bonds hold DNA nucleotides together to form double helix structure