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Genotype and Phenotype. What is the difference?. Review Words. Characteristics – are the category of a trait – Example – eye color, height, likes/dislikes Traits – the physical, social, and emotional qualities of an organism Example – blue eyes, tall, hates carrots

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genotype and phenotype

Genotype and Phenotype

What is the difference?

review words
Review Words
  • Characteristics – are the category of a trait –
    • Example – eye color, height, likes/dislikes
  • Traits – the physical, social, and emotional qualities of an organism
    • Example – blue eyes, tall, hates carrots
  • Dominant Trait – when a majority of an organism shows the trait.
    • Example – most pea plants show as tall
  • Recessive Trait – when a minority of an organism shows the trait.
    • Example – few pea plants show as short
  • Alleles – all the possible choices for a characteristic
    • Example – eye color – blue, brown, gray, green
genotype
Genotype
  • How the genes code for a specific trait.
  • If the trait is dominant it uses a capital letter
    • Example – Tall (T)
  • If the trait is recessive it uses the same letter but lower case
    • Example – short (t)
  • Genotypes always have two letters – one for dad and one for mom
types of genotype
Types of genotype
  • Purebred (homozygous) dominant – the genes only have the dominant trait in its code.
    • Example – Dominant Tall -- TT
  • Purebred (homozygous) recessive – the genes only have the recessive trait in its code.
    • Example – Recessive short – tt
  • Hybrid (heterozygous) – the genes are mixed code for that trait.
    • Example – hybrid Tall -- Tt
phenotype
Phenotype
  • The outward appearance of the trait.
  • How an organism looks
  • How an organism acts
  • How an organism feels
tricks to remembering the difference between genotype and phenotype
Tricks to remembering the difference between Genotype and Phenotype
  • Genotype – deals with GENE CODE.
  • Phenotype – deals with looks you can take a PHOTO with.
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