Name _____________________________
Period _________
SEVEN TRAITS OF MENDEL’S GARDEN PEAS
Allele type
Seed Shape
Seed Color
Flower Color
Dominant
Round
Yellow
Purple
R
Y
P
Recessive
Wrinkled
Green
White
r
y
p
1. Give the genotypes for each:
Heterozygous Tall
_________________
Homozygous Yellow seed
_________________
Pod Shape
Pod Color
Inflated
I
Constricted
i
Green
G
Yellow
g
Heterozygous Green pod
Flower
Position
Side
S
End
s
Stem Length
Tall
T
Short
t
___________________
Homozygous Wrinkled seed ___________________
2. Give ALL possible genotypes for each
Inflated pod
__________________
Purple Flower ___________________
Side Flower___________________
Short Stem ___________________
3. Provide a genotype for a true-breeding Yellow pod plant _______________________
4. Provide a genotype for a hybrid Yellow seed plant
_______________________
5. Write the phenotype for each genotype using the chart above:
Example: RR = Round Seed
Tt _________________________________
gg ______________________________________
Rr __________________________________
tt _______________________________________
6. If two homozygous tall stemmed parents are crossed then:
What is the ratio of possible tall offspring?
_________________
What is the ratio of possible short offspring?
__________________
Will there be any hybrid plants?
__________________
Punnett Square:
Create a Punnett Square and give the Phenotype and Genotype of the offspring for the following crosses:
7. Cross a Homozygous round seed plant with a Homozygous wrinkled seed plant:
Parents: _________ X _____________
Ratios of Genotype for possible offspring:
Ratios of Phenotype for possible offspring:
8. Cross a Heterozygous green pod plant with a Homozygous green pod plant:
Parents: __________X____________
Ratios of Genotype for possible offspring:
Ratios of Phenotype for possible offspring:
9. Cross a Homozygous yellow seed plant with a Homozygous yellow seed plant:
Parents: _________X __________
Genotype of offspring:
Phenotype of offspring:
10. Two- Trait Cross Independent Assortment
Cross a Heterozygous Yellow Round seed pea plant with a Homozygous Green Wrinkled seed pea plant.
Parents: ___________X____________
Genotypes:
Phenotypes: