Chapter 5 Lesson 2 Understanding Inheritance

Unlock the secrets of inheritance! Learn about genes, alleles, and how traits are passed on.

What does homozygous mean? The two genes in a hybrid are dominant. The two alleles in a genotype are the same. The two traits in a phenotype are different. What is a gene? A pair of chromosomes. A chemical that predicts heredity. A piece of a chromosome with code for one trait. The outward expression, or appearance, of a genetic trait is its allele pedigree phenotype inheritance What do you call different forms of a gene? alleles chromosomes recessive What do you call the two alleles that control the phenotype of a trait? dominant homozygous genotype If the two alleles of a gene are different, it's genotype is _. heterozygous homozygous recessive A _ is a model used to show possible outcomes of traits. ratio coin toss Punnett Square What does a pedigree show? Genotypes Phenotypes of genetically related family members. Alleles show _ when the offspring's phenotype is a combination of the parents' phenotypes. incomplete dominance codominance polygenic inheritance When both alleles can be observed in a phenotype, this type of interaction is called _. incomplete dominance codominance polygenic inheritance