10. How do environmental factors affect people with the Marfan syndrome?

It is found in the joints, eyes, heart, blood vessels, lungs, bones, and in the membrane covering the brain and spinal cord. Marfan syndrome can affect both men and women of any race or ethnic group. ... The genetic test for Marfan syndrome is available at most centers but is not routinely covered by insurance.

Explanation:

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".