Plant Breeding and Genetics

Overdominance

Dominance

Epistasis

All the above

Principles of linkage

Discovery of gene

heredity theory

Rediscovery of Mendel’s

Knoll and Risks

Sigmund

Schwaan

Robert Hook

Tomato

Rapseed/mustard

Oat

Barley

Goulden (1939)

Falconer (1960)

Jensen (1952)

Johannsen (1903)

Heterocyst

Hypostasis

Hetropyenosis

Epistastasis

Selective mating and small population

High mutation ratio and small population

Low mutation population

No migration and large population

Nuclear division come to close

Chromatids become chromosomes

Chromosomes become half in number

Exchange of chromosomal material

Non-genetic

Recessive

Dominant

Unexpressive

6

3

4

2