Erin+and+Randi

Randi and Erin's Heredity Page

Genetics-the branch of biology that focuses on heredity. Heredity-the passing of the traits from parents to offspring. Cross-a cross os the mating (breeding) of two individuals. True Breeding-a plant is true-breeding if it only shows one form of a trait after several generations of self pollination. Monohybrid Cross-a monohybrid cross is a cross that involves only one trait. Hypotheses-a proposition assumed as a premise in an argument. Dominant and recessive alleles-each trait is represented by a letter. The dominant is expressed by a capital letter. The recessive allele is expressed by a lower case letter. Homozygous-If the two alleles that are present for a particular gene are the same, the individual is homozygous for that trait. Heterozygous-If the two alleles are different, he individual is called heterozygous for that trait. (Pp) Genotype-the set of alleles an individual has is called the genotype. Phenotype-the physical appereince of the trait is called the phenotype. Law of segregation-the two alleles for a trait seperate during gamete formation. Law of Independent Assortment-the heritance of one trait is not influenced by any other traits because the tetrads and chromosome lie up independently.