01:119:115 Lecture Notes - Lecture 12: Punnett Square, Gamete, Zygosity
3 Apr 2016
School
Department
Course
Professor
Document Summary
Gregor mendel - first to discover basic rules of inheritance in eukaryotes, experimental model - discovered basic principles of heredity by breeding garden. Mendelian genetics peas: mendel"s control pollination i. ii. iii. F2 - second filial generation: new hypothesis - inheritance of discrete characteristics i. ii. iii. Characters determined by heritable factors passed from generation to generation. Each character controlled by two factors: factor from one parent can mask expression of factor from other, mendel"s model concepts, alleles - alternative versions of genes i. ii. Alleles - pieces of dna that code for a gene. Each gene is at same locus on homologous chromosomes: 2 alleles inherited, one from each parent, may be identical, like true breeding plants (p generation, may be different, like f1 hybrids, dominant and recessive alleles i. Egg or sperm gets only one of the two alleles.
