Question

Traits that are inherited with a polygenic pattern have the following distribution:

(1 point)
Responses

Normal distribution
Normal distribution

Exponential distribution
Exponential distribution

Uniform distribution
Uniform distribution

Lognormal distribution
Lognormal distribution

Answer 1

Normal distribution.

Polygenic traits arise from many genes with small additive effects (plus environmental variation), so their phenotypes typically form an approximately bell-shaped (normal) distribution (e.g., height, skin color).