Mendel Lecture Guide
Heredity (6)
Character
Trait
Blending Theory of Genetics
Particulate Theory of Genetics
Gregory Mendel
Austrian Monk
Heredity
The problem with Flowers
7 years
7 traits
thousands of plants
Patterns of inheritance
Why peas
Fast growth and reproduction
Easy/discrete characters
Self pollination (both genders)
Solution to the problem of flowers: Particle genetics /heterozygous
Genes
Alleles
Phenotype
Genotype
Dominant
Recessive
Homozygous / True Breeding
Heterozygous / Hybrids
Genetics
Probability (Law of Addition; Law of Multiplication)
Progenitors / Parents
Progeny / Offspring
Gametes
Fertilization
Zygote
Punnet Square
Monohybrid Crosses (Phenotypes / Genotypes / Ratios of Parents
& Offspring)
True breeding
Cross-pollination vs Self-pollination
Self-pollination and making true breeders
(vs. Asexual Reproduction)
Parental Cross
P Generation
F1 Generation
Law of Dominance
F1 Cross
F2 Generation
Law of Segregation
Chromosomes
Meiosis & Separation of Homologous
Blending vs. Particle Theory
F2 Crosses
Dominance F2 crosses
Test Cross & Dominant Phenotype Determination
(Vs. Genetics Test or Self-Cross)
Review of How Self-Pollination Causes True Breeders
Crosses
Asexual vs. Sexual Reproduction
Review of the Solution to the Problem with Flowers
Particle Genetics
Heterozygous
Different Crosses that look like the same cross
Multi-character Crosses
Dyhibrid Punne t Squares
Complex multi character punnet square
9-3-3-1 phenotype ratios on dihybrid cross
Simple multi character punnet squares
Law of Independent Assortment
Predicting gametes & Law of Hybrids
Probability (Law of Addition; Law of Multiplication)
OR  Cannot happen together  Mutually
Exclusive  Addition
AND  Independent Events  Can happen
together  Multiplication
Using probability laws of multiplation in Genetics
Monohybrid cross
Dihybrid Cross
Independent Assortment Chances
Using probability laws of addition in Genetics
Monohybrid cross
Dihybrid Cross
Allelic Relationships
Complete Dominance
Incomplete Dominance
CoDominance
Dominance Relationships & Level of Analysis
Multiple Allele Traits
Genetic cross patterns (See Separate File)
Recognize Crosses
True Breeding Dominant
True Breeding Recessive
Parental
F1
F2 Dominance
F2 Test Cross
Genotype / Phenotype of progenitors of each cross
Genotype / Phenotype ratios of progeny of each cross
To which crosses do the following apply
(Consider type of Dominance: Complete, Incomplete,
Codominance)
All parents have the same genotype
All parents have the same phenotype
Parents have different genotypes
Parents have different phenotype
Offspring all have the same genotype
Offpsring all have the same phenotype
Offpsring show different genotypes
Offspring show different phenotypes
Offspring genotype ratio is 1:2:1
Offspring genotype ratio is 1:1
Offspring phenotype ratio is 1:2:1
Offspring phenotype ratio is 3:1
Offspring phenotype ratio is 1:1
Offspring share parental phenotypes (identical)
Offspring may look different from identical parents
All offspring show phenotype of one of the parents
All ofspring show phenotype of neither of the parents
Offspring ratios (Geno or phenotype) = parental ratios
Genetics Relationships
Epistasis
Pleitropy
Polygenic inheritance / Quantitative characters /
Polymorphism /
Multifactorial traits
Epigenetics
Factors: Environmental vs. Genetic
Twin Studies
Norm of reaction