1. Dihybrid Corn Lab intro- how do you determine if genes are located on separate chromosomes or are linked on the same chromosome?

2. Dihybrid Corn Lab intro- how do you determine if genes are located on separate chromosomes or are linked on the same chromosome?
If the TWO genes are located on separate (NON-Homologous) chromosomes, then their OBSERVED patterns of inheritance should “Match” the Expected patterns of inheritance predicted by doing a dihybrid cross

3. Dihybrid Corn Lab intro
Purpose: To determine if the 2 characteristics in a dihybrid cross are transmitted together or each characteristic is inherited independently (because the different genes are located on different chromosomes)
Characteristics:
kernel color: Purple v. Yellow
Kernel shape: smooth v. wrinkled
PPSS
ppss
PpSs
PpSs ?

4. Hypothesis1: If the 2 characteristics in a dihybrid cross are transmitted together, then the phenotype ratio of the F2 generation will be ___ Purple Smooth to ___ yellow wrinkled

5. Hypothesis : If the 2 characteristics in a dihybrid cross are transmitted independently on non-homologous chromosomes, then the phenotype ratio of the F2 generation will be …
___ Purple Smooth to ___ Purple wrinkled to ___ Yellow Smooth ___ Yellow wrinkled

6. Hypothesis : If the 2 characteristics in a dihybrid cross are transmitted independently on non-homologous chromosomes, then the phenotype ratio of the F2 generation will be …
___ Purple Smooth to ___ Purple wrinkled to ___ Yellow Smooth ___ Yellow wrinkled

7. Gather raw phenotype data Analyze data
Use statistical analysis called “Chi squared (2 ) statistical test”