2 Flashcards
Two important scientists for Mendel
- Christian Doppler
- ranz Unger
Character
A heritable trait that varies among individuals
Trait
Each variant for character
Advantage of using peas as model organisms
- Many varieties
- Short generation time
- Large number of offspring
- Strictly control mating
True-breeding
These plants produce identical offspring (homozygous for genes)
Hybridization
Crossing of two true-breeding varieties
Alelles
Alternative versions of a gene
4 things that make up Mendel’s model
- Alternative versions of genes account for variations in inherited characteristics
- For each character, an organism inherits two traits (one from each parent)
- Dominant vs recessive
- Law of segregation
What do we cross a sample of unknown phenotype with in a test-cross?
Homozygote recessive
Monohybrid cross
Cross between monohybrids
Monohybrid
Heterozygous for one character
Pleiotropy
One gene influences one or more trait
Two types of scenarios where multiple genes code for a trait
- Epistasis (interact)
- Polygenic inheritance (do not interact)
Say epistatic 5 times
.
Example of polygenic inheritance
Height