Jenna knows that cystic fibrosis runs in her family and she is worried she might carry the gene. she is marrying tyler, who does not think that cystic fibrosis runs in his family. jenna and tyler are getting married, and plan on starting a family. identify the unresolved problem they will share as a married couple.
a.
tyler does not know if cystic fibrosis runs in his family.
b.
jenna does not know if she carries the cystic fibrosis gene.
c.
jenna and tyler do not know the chances of passing on cystic fibrosis to their future offspring.
d.
jenna and tyler plan on staring a family.

The correct answer is c.   Jenna and Tyler do not know the chances of passing on cystic fibrosis to their future offspring.

Cystic fibrosis is a genetic disorder which can be inherited from the parents. This disease affects mostly lungs but can affects liver, pancreas and other organs of the body such as digestive system.  Cystic fibrosis can occur in offspring when he and she inherit one copy copy of gene that causes  cystic fibrosis from each parent. In this question Jenna knows that she may carry a gene that causes cystic fibrosis but Tyler seems to be a normal man who does not gene causing cystic fibrosis.  

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.