( ( ( ( ( It ( helps ( them ( to ( ( understand more ) ( about ( ( ( the disorder ) , ) ( ( ( their ( child 's ) ) risk ) ( of ( having ( a ( ( similarly affected ) child ) ) ) ) ) ) ) ) ) ) ) ) , ) and ) ( ( ( the risk ) ( to ( ( ( the ( parents ' ) ) and ) child ) ) ) ( 's siblings ) ) ) . )
(ROOT (S (S (NP (PRP It)) (VP (VBZ helps) (S (NP (PRP them)) (VP (TO to) (VP (VB understand) (NP (JJR more)) (PP (IN about) (NP (NP (DT the) (NN disorder)) (, ,) (NP (NP (NP (PRP$ their) (NN child) (POS 's)) (NN risk)) (PP (IN of) (S (VP (VBG having) (NP (DT a) (ADJP (RB similarly) (VBN affected)) (NN child))))))))))))) (, ,) (CC and) (S (NP (NP (DT the) (NN risk)) (PP (TO to) (NP (NP (DT the) (NNS parents) (POS ')) (CC and) (NP (NN child))))) (VP (VBZ 's) (NP (NNS siblings)))) (. .)))
It helps them to understand more about the disorder, their child's risk of having a similarly affected child, and the risk to the parents' and child's siblings.
(ROOT (S (NP (NNP Children)) (VP (VBP resemble) (NP (PRP$ their) (NNS parents)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (NP (JJ similar) (NN dna)))))) (. .)))