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Download Genotype and Phenotype - Avondale Elementary School
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Genotype and Phenotype What is the difference? Vocabulary 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 – a trait that is normally overshadowed by other traits. Example – blue eyes, tall, hates carrots Dominant Trait – a trait that overshadows other traits and is the most common seen trait. Example – eye color, height, likes/dislikes, hair color 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 in some cases. Example: flight or fight response Tricks to remembering the difference between Genotype and Phenotype Genotype – deals with GENE CODE. Phenotype – deals with looks, your physical appearance. Let’s See What You Remember! A dominant trait is represented by a __________ __________. A recessive trait is represented by a __________ __________. Genotypes always have ________ letters. Another word for a purebred genotype is ___________. Another word for a hybrid genotype is _____________. Phenotype is an organism’s ______________________. Genotype is an organism’s ______________________. What does genotype mean? Flower Color – Purple (P) and Yellow (p) Genotype – PP Phenotype – Genotype – pp Phenotype – Genotype – Pp Phenotype – Fur Color – Black (B) and Brown (b) Genotype – Bb Phenotype – Genotype – BB Phenotype – Genotype – bb Phenotype – What does phenotype mean? Fur Length – Long (L) or Short (l) Phenotype – Long Fur Genotype – Genotype – Phenotype – Short Fur Genotype – Fur Pattern – Striped (S) or Spotted (s) Phenotype – Striped Genotype – Phenotype – Spotted Genotype – Is there a pattern to how genotype and phenotype relate to each other? This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
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