5.5 Environmental Effects on Phenotype
Notes
The environment can change how genes are expressed.
- Hydrangea flower color depends on soil pH.
- Himalayan rabbits and Siamese cats are darker in cooler body areas.
- Phenylketonuria (PKU) effects are reduced by diet.
Practice
Hydrangeas with the same genotype show different colors because of:
Environment affects phenotype.
Phenotype is the result of:
Both matter.
Seasonal coat color changes in some animals respond to:
Environmental cues.
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