Genetics

Matching Match the term with the correct definition Heterozygous two different alleles, a hybrid (Tt) Heredity The passing of characteristics from parent to offspring Genotype The type of genes or alleles present in an organism Dominant The type of gene that always shows even in the presence of a recessive allele Trait Different forms of the same gene (EX: Tall vs. Short) Homozygous Two alleles of the same form that makes up a genotype, pure breed (TT or tt) Gregor Mendel The father of modern genetics Recessive For of a gene only expressed in a homozygous state (hidden allele) Phenotype An organism's physical appearance Genetics The study of heredity Gene A segment of DNA located on a chromosome that codes for a particular protein Punnett Square Practice One parent is tall (dominant allele). One parent is short (recessive allele). Punnett Square T t t Tt tt t Tt tt What are the chances (%) their child will be short? 100% 75% 50% 25% Phenotype practice - For each of the genotypes, determine the phenotype. WRITE IN ALL LOWERCASE and ONLY WRITE THE COLOR. (Example: purple or white). Purple flowers are dominant to white flowers. Genotype Phenotype PP purple Pp purple pp white Genotype practice - for each of the phenotypes, list the genotype Straight hair is dominant to curly. (use "R" and "r") phenotype genotype Straight (homozygous) RR Straight (heterozygous) Rr Curly rr