Observed trait (phenotype) that is nor suppressed Question Mom has black hair & Dad has blonde hair therefore, child has_____ hair. Dog with a long tail & Dog with a short tail therefore, puppy has______ tail. Dominant Traits: Observed trait when two opposite alleles are inherited (different genotypes) Observed trait (phenotype) that is nor suppressed ex) long leg length in fruit flies Recessive Traits: Observed trait only when two same-acting non-dominant alleles are inherited (same genotype) Can be suppressed by a dominant trait

Dominant vs. Recessive Traits Inheritance of Traits Dominant vs. Recessive Traits Can use Punnett Square to determine the probability of each genotype’s occurrence Dominant genotypes are in CAPITAL Recessive genotypes are in lower case Ex) fruit fly leg length Dominant: long (F) Recessive: short (f) If the mother is purebred with short legs and the father with purebred long legs, what could the legs of the children look like?

Genetic Research Many people believe that the Human Genome Project is the most important scientific effort humans have ever attempted Human Genome Project A map of where all the genes found in a complete set of 46 human chromosomes are entire genetic code of humans