2. (10 points)
a. Set up and complete a Punnett squarefor a cross of two of the F1 from the Y Y and y y cross above.
|
Parent 1 |
|||
| Y | Y | ||
| Parent 2 | y | Yy | Yy |
| y | Yy | Yy |
b. What are the genotypes and phenotypes of the F2 generation?
The genotypes of offsprings are Yy (heterozygous) and their proportion is 100% If Y= yellow an y= blue, then the phenotypes of the off springs would be the characteristics of Y gene which means all the off springs will have a yellow color.
Experiment 2
Questions
As you select the beads from the beaker, complete this table with each cross. You may complete the associated Punnett Squares on paper, but do not need to submit them as part of this lab.
| Parents – randomly selected | F1 – determined from Punnett square | |||
| Cross | Genotype parent #1 | Genotype parent #2 | 4 Genotypes | 4 Phenotypes |
| 1 | yy
|
yy | yy | yy |
| 2 |
Yy |
yY | YY | Yy |
| 3 |
Yy |
YY | YY | YY |
| 4 | yY
|
yy | Yy | yy |
| 5 |
yy |
YY | Yy | Yy |