Question

Based on the text, pick the environmental factor that was the most likely cause for gene expression of lactase to stay on into adulthood.
Responses

living in a cold climate
living in a cold climate

herding goats for a living
herding goats for a living

drinking goat’s milk your entire life
drinking goat’s milk your entire life

being nomads and moving around

Answer 1

The environmental factor that was most likely the cause for gene expression of lactase to stay on into adulthood is **drinking goat’s milk your entire life**.