Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

Which statement about the relationship between genotype and phenotype is true?

1. Genotype is always expressed as the phenotype

2. Phenotype results from the interaction of genotype with the environment

3. Genotype has no influence on the phenotype

4. Phenotype determines genetic outcomes

The correct answer is: Phenotype results from the interaction of genotype with the environment

The statement that phenotype results from the interaction of genotype with the environment is accurate because it captures the essence of how an organism's traits are developed. The genotype refers to the genetic makeup of an individual, which consists of the alleles inherited from their parents. However, the phenotype, which is the observable characteristics or traits, doesn't arise solely from the genotype. Environmental factors such as nutrition, climate, and exposure to toxins can significantly influence how the genotype is expressed. This concept highlights the importance of the environment in shaping traits, making it clear that the relationship between genotype and phenotype is not a direct one-to-one correspondence. Instead, it involves complex interactions that can lead to variations in phenotype even among individuals with identical genotypes. This understanding is fundamental in fields such as genetics, biology, and medicine, where acknowledging both genetic and environmental factors is crucial for fully grasping how traits are expressed in living organisms.