Name_____________
Problem Set #3
Trait
Pod Shape
Pod Color
Flower Position
Plant Height
Seed Shape
Seed Color
Dominant Allele
Smooth (N)
Green (G)
Axial (A)
Tall (T)
Round (R)
Yellow (Y)
Recessive Allele
Constricted (n)
Yellow (g)
Terminal (a)
Short (t)
Wrinkled (r)
Green (y)
1. Cross a plant that is heterozygous for smooth pods with a plant that is homozygous for
smooth pods.
2. Cross a plant that is heterozygous for axial flowers with a plant that has terminal
flowers.
3. Cross two heterozygous tall plants.
4. Cross two plants that are heterozygous for green pods.
5. Cross a homozygous tall plant with a short plant
6. Cross a homozygous round seed pea plant with a homozygous wrinkled pea plant.
7. Cross a heterozygous smooth pea pod with another heterozygous smooth pea pod.
8. Cross a heterozygous yellow seed pea plant with a homozygous green seed pea plant.
9. If 480 seeds were produced as the offspring from problem 8, about how many of these
seeds should be green?
10. Cross a heterozygous axial flower pea plant with another just like it.
11. If 100 offspring were produced from problem 10, about how many of them should have
axial flowers? About how many should have terminal flowers?
12. Let the offspring (the F1 generation) from problem 6 self-pollinate.
13. If the F2 generation from problem 6 was 200 seeds, about how many of these seeds
should be wrinkled?