Genotype and Phenotype What is the difference Review

Genotype and Phenotype What is the difference?

Review Words Characteristics – are the category of a trait – Traits – the physical, social, and emotional qualities of an organism Example – most pea plants show as tall Recessive Trait – when a minority of an organism shows the trait. Example – blue eyes, tall, hates carrots Dominant Trait – when a majority of an organism shows the trait. Example – eye color, height, likes/dislikes Example – few pea plants show as short Alleles – all the possible choices for a characteristic Example – eye color – blue, brown, gray, green

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 Purebred (homozygous) dominant – the genes only have the dominant trait in its code. Purebred (homozygous) recessive – the genes only have the recessive trait in its code. Example – Dominant Tall -- TT Example – Recessive short – tt Hybrid (heterozygous) – the genes are mixed code for that trait. Example – hybrid Tall -- Tt

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 Genotype – deals with GENE CODE. Phenotype – deals with looks you can take a PHOTO with.

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