Genes

About genes, phenotype, genotype and DNA.

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  • Genes
    • Phenotype: physical appearance
    • DNA is found in the nucleus of a cell.
    • Heterozygous: Bb, Tt, Rr
      • Homozygous dominant: BB, TT, RR
      • Homozygous recessive: bb, tt, rr
    • Alleles are alternate forms of a gene.
  • Variation
    • Genetic: caused by information inside cells.
    • Environmental: differences in characteristics caused by the environment.
    • Genes
      • Phenotype: physical appearance
      • DNA is found in the nucleus of a cell.
      • Heterozygous: Bb, Tt, Rr
        • Homozygous dominant: BB, TT, RR
        • Homozygous recessive: bb, tt, rr
      • Alleles are alternate forms of a gene.

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