PART 1: MEND ELIAN GENETICS
For the following questions, use these facts: The trait is flower color (R). Red flower is dominant over white
flower.
1. What is the letter of the dominant allele? _______________
2. What is the letter of the recessive allele? ________________
3. What is the homozygous dominant genotype? ___________
4. What is the homozygous recessive genotype? ___________
5. What is the heterozygous genotype? ___________________
6. What is the genotype for red flower? ___________________
7. What is the genotype for white flower? _________________
8. What is the phenotype for No. 3? ______________________
9. What is the phenotype for No. 4? ______________________
10. What is the phenotype for No. 5? ______________________
11-15. Tan body trait is dominant over the yellow body trait in fruit flies. Fill in the punnett square and
determine the expected genotype and phenotypes of the F1 generation by crossing homozygous recessive
and homozygous dominant parents. (5pts.)
A. Possible genotypes of F1 offspring:_____________
B. Possible phenotype of F1 offspring:_____________
C. Percentage of F1 offspring that are tan:___%
D. Yellow:_____%
E. Percentage of F1offspring that are homozygous dominant:____%
F. Percentage of F1offspring that are heterozygous:____%
G. Percentage of F1offspring that are homozygous recessive:____%
NAME: DATE SUBMITTED:
SECTION:
F1 Generation
