Mendelian Genetics
Mendel based his laws on the observations he made on physical traits of pea plants.
The prevailing theory of genetic transmission was based on “vital fluids”
Mendel’s laws are based on hereditary traits being controlled by discreet factors.
Mendel’s laws have been refined by subsequent research. Law #1: Hereditary traits are controlled by discreet factors.
Refinements: Law #2. Each trait is produced by 2 hereditary factors.
Refinements: Law #2. Each trait is produced by 2 hereditary factors, continued.
Refinements: Law #3: When 2 contrasting factors are present, only one will be expressed. The expressed factor is dominant and the other recessive.
Refinements: Law #4 -- Each parent contributes only one of the 2 hereditary factors to each gamete.
Refinements: Law #5. When gametes unite, the two hereditary factors are brought together.
Refinements: Law #6: The factors of different genes are segregated independently.
Email: seisen
Home Page: http://www.cbu.edu/~seisen/
Other information: Principles of Mendelian Genetics