Question

Why do people with Down Syndrome exhibit a wide array of symptoms?

a) Variable expressivity
b) Incomplete dominance
c) Codominance
d) Polygenic inheritance

Answer 1

People with Down Syndrome exhibit a wide array of symptoms due to Variable Expressivity.

Step-by-step explanation:

People with Down Syndrome exhibit a wide array of symptoms due to a condition called Variable Expressivity. Variable expressivity refers to the phenomenon where individuals with the same genetic mutation may have different symptoms or a varying severity of symptoms. In the case of Down Syndrome, individuals have an extra copy of chromosome 21, which leads to characteristic physical and intellectual disabilities. However, the specific symptoms and their severity can vary among individuals.