Alguém me pode explicar como se pode resolver esta questão?
Genética prática - Técnica PCR

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

answer; a male inherits only one allele of the x-linked gene controlling hair color;

the answer is d. chordata