Related species have similar body structures because they inherited the same genes from a common ancestor. True False

True

Explanation:

According to the theory of evolution the traits are passed from one generation to the other during the course of evolution. The related species are expected to have a common ancestor due to presence of homologous structures. The homologous structures are those structures which have the same structure but different function. The homologous structures help in supporting the evidence that modern day organisms have evolved from primitive organisms.

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

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.