1. 10.1 Mendel’s Laws of Heredity
Part 2

2. Mendel’s Research

3. Mendel’s Research Monohybrid Cross Tall plant and short plant
First offspring generation(F1) = all tall
Second offspring generation(F2) = 3 tall: 1 short
Mendel called the tall allele dominant and the short allele recessive

4. Laws of Heredity When describing experiments of heredity
Each trait is represented by a letter
Capital for dominant, lowercase for recessive
TT x tt

5. Laws of Heredity An adult plant has two alleles for a trait
A gamete has one allele, each parent gives one allele to the offspring

6. Laws of Heredity
During fertilization gametes randomly pair to produce combinations of alleles
Law of Segregation

7. Laws of Heredity Genotype = gene combination, TT, tt, Tt
Homozygous = two of the same alleles
Heterozygous = two different alleles
Phenotype = outward appearance
Tall or short

9. Laws of Heredity Law of independent assortment
Genes for different traits are inherited independently

10. Laws of Heredity Law of independent assortment
Genes for different traits are inherited independently