Question

an individual’s genotype predicts an adult height of 6.5 feet, but that individual grows to only 5.5 feet in adulthood. what accounts for the difference in height?
barr body formation
environmental factors
recessive inheritance
gene silencing
incomplete dominance

Explanation:

Height is a polygenic trait influenced by both genotype and environment. The difference between the predicted genetic height (6.5 feet) and actual height (5.5 feet) is most likely due to environmental factors like nutrition, health, or lifestyle, which modify phenotypic expression of the genotype. Other options (barr body formation, recessive inheritance, gene silencing, incomplete dominance) relate to genetic mechanisms, not the gap between genetic prediction and actual trait expression here.

Answer:

B. environmental factors