Every Time You Work a Problem
1. Set up a Key (which indicates the dominant and recessive alleles; even if you are
unsure of which allele is dominant or recessive you should still set up a key to begin)
2. Show the cross (who is being "crossed" with whom).
3. Work the cross and show your work
)
, (using "FOIL" or Punnett square method
4. Summarize your results by giving:
(a) fraction or percent of each genotype of offspring.
(b) fraction or percent of each phenotype of offspring.
Genetics Problems
2