What is the difference?

Vocabulary  Heredity – passing of traits from parent to offspring  Traits – the physical, social, and emotional qualities of an organism  Example – blue eyes, tall, hates carrots  Dominant Trait – Stronger trait that will overtake a recessive trait  Recessive Trait – Weaker trait that is hidden by a dominant trait

Vocabulary  Alleles – all the possible choices for a characteristic  Example – eye color – blue, brown, gray, green  Genotype – the pair of genes an organism has (one allele from each parent)  Phenotype – the trait that can be seen

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 Homozygous - an individual that has the same type of gene from each parent. (Ex. BB or bb) Heterozygous – an individual that has different gene types (one from each parent). (Ex. Bb)

Homozygous and Heterozygous Homozygous dominant – the genes only have the dominant trait in its code.  Example – Dominant Tall – TT Homozygous recessive – the genes only have the recessive trait in its code.  Example – Recessive short – tt 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.