9: Using Genetic Crosses to Analyze a Stickleback Trait
- Characterize stickleback fish according to the presence or absence of pelvic spines.
- Use Punnett squares to predict the frequencies of genotypes and phenotypes in the offspring of a genetic cross, based on the genotypes of the parents.
- Develop hypotheses about whether a phenotype is dominant or recessive.
- Evaluate the evidence in support of or against the hypothesis
Thumbnail: Gasterosteus aculeature species of stickleback inhabits the Atlantic coast of North America. (CC BY-SA 4.0; Ghegeman via Wikipedia )